1st SLS 2nd Stage Arrives at Cape for NASA’s Orion Megarocket Moon Launch in 2018

Composite view of the interim cryogenic propulsion stage (ICPS) for first flight of NASA's Space Launch System (SLS) rocket at United Launch Alliance manufacturing facility in Decatur, Alabama in December 2016 (left) and arrival of ICPS in a canister aboard the firm’s Delta Mariner barge on March 7, 2017 (right). Credits: ULA (left) and Ken Kremer/kenkremer.com (right)
Composite view of the interim cryogenic propulsion stage (ICPS) for first flight of NASA’s Space Launch System (SLS) rocket at United Launch Alliance manufacturing facility in Decatur, Alabama in December 2016 (left) and arrival of ICPS in a canister aboard the firm’s Delta Mariner barge on March 7, 2017 (right). Credits: ULA (left) and Ken Kremer/kenkremer.com (right)

PORT CANAVERAL – Bit by bit, piece by piece, the first of NASA’s SLS megarockets designed to propel American astronauts on deep space missions back to the Moon and beyond to Mars is at last coming together on the Florida Space Coast. And the first big integrated piece of actual flight hardware – the powerful second stage named the Interim Cryogenic Propulsion Stage (ICPS) – has just arrived by way of barge today (Mar. 7) at Port Canaveral, Fl.

The ICPS will propel NASA’s new Orion crew capsule on its maiden uncrewed mission around the Moon – currently slated for blastoff on the inaugural SLS monster rocket on the Exploration Mission-1 (EM-1) mission late next year.

SLS-1/Orion EM-1 will launch from pad 39B at NASA’s Kennedy Space Center in late 2018. The SLS will be the most powerful rocket in world history.

NASA is currently evaluating whether to add a crew of 2 astronauts to the SLS-1 launch which would result in postponing the inaugural liftoff into 2019 – as I reported here.

The interim cryogenic propulsion stage (ICPS) for first flight of NASA’s Space Launch System (SLS) rocket arrived at Port Canaveral, Florida on March 7, 2017 loaded inside a shipping canister (right) aboard the ULA Delta Mariner barge that set sail from Decatur, Alabama a week ago. The ICPS shared the shipping voyage along with a ULA Delta IV first stage rocket core seen at left. Credit: Ken Kremer/kenkremer.com

The SLS upper stage – designed and built by United Launch Alliance (ULA) and Boeing – arrived safely by way of the specially-designed ship called the Delta Mariner early Tuesday morning, Mar. 7, into the channel of Port Canaveral, Florida – as witnessed by this author.

“We are proud to be working with The Boeing Company and NASA to further deep space exploration!” ULA said in a statement.

Major assembly of the ICPS was completed at ULA’s Decatur, Alabama, manufacturing facility in December 2016.

The interim cryogenic propulsion stage (ICPS) for the first flight of NASA’s Space Launch System (SLS) rocket has arrived by way of barge at Cape Canaveral Air Force Station in Florida on March 7, 2017. The ICPS will be moved to United Launch Alliance’s Delta IV Operation Center at the Cape for processing for the SLS-1/Orion EM-1 launch currently slated for late 2018 launch from pad 39B at NASA’s Kennedy Space Center. Credit: ULA

The ICPS is the designated upper stage for the first maiden launch of the initial Block 1 version of the SLS.

It is based on ULA’s Delta Cryogenic Second Stage which has successfully flown numerous times on the firm’s Delta IV family of rockets.

In the event that NASA decides to add a two person crew to the EM-1 mission, Bill Hill, NASA’s deputy associate administrator for Exploration Systems Development in Washington, D.C., stated that the agency would maintain the Interim Cryogenic Propulsion stage for the first flight, and not switch to the more advanced and powerful Exploration Upper Stage (EUS) planned for first use on the EM-2 mission.

The ULA Delta Mariner barge arriving in Port Canaveral, Florida on March 7, 2017 after transporting the interim cryogenic propulsion stage (ICPS) hardware for the first flight of NASA’s Space Launch System (SLS) rocket from Decatur, Alabama. SLS-1 launch from the Kennedy Space Center is slated for late 2018. Credit: Ken Kremer/kenkremer.com

The ICPS was loaded onto the Delta Mariner and departed Decatur last week to began its sea going voyage of more than 2,100 miles (3300 km). The barge trip normally takes 8 to 10 days.

“ULA has completed production on the interim cryogenic propulsion stage (ICPS) flight hardware for NASA’s Space Launch System and it’s on the way to Cape Canaveral aboard the Mariner,” ULA noted in a statement last week.

The 312-foot-long (95-meter-long) ULA ship docked Tuesday morning at the wharf at Port Canaveral to prepare for off loading from the roll-on, roll-off vessel.

The Delta Mariner can travel on both rivers and open seas and navigate in waters as shallow as nine feet.

“ICPS, the first integrated SLS hardware to arrive at the Cape, will provide in-space propulsion for the SLS rocket on its Exploration Mission-1 (EM-1) mission,” according to ULA.

The next step for the upper stage is ground transport to United Launch Alliance’s Delta IV Operation Center on Cape Canaveral Air Force Station in Florida for further testing and processing before being moved to the Kennedy Space Center.

ULA will deliver the ICPS to NASA in mid-2017.

“It will be the first integrated piece of SLS hardware to arrive at the Cape and undergo final processing and testing before being moved to Ground Systems Development Operations at NASA’s Kennedy Space Center,” said NASA officials.

“The ICPS is a liquid oxygen/liquid hydrogen-based system that will provide the thrust needed to send the Orion spacecraft and 13 secondary payloads beyond the moon before Orion returns to Earth.”

The upper stage is powered by a single RL-10B-2 engine fueled by liquid hydrogen and oxygen and generates 24,750 pounds of thrust. It measures 44 ft 11 in (13.7 m ) in length and 16 ft 5 in (5 m) in width.

The interim cryogenic propulsion stage (ICPS) for the first flight of NASA’s Space Launch System (SLS) rocket as it completed major assembly at United Launch Alliance in Decatur, Alabama in December 2016. The ICPS just arrived by way of barge at Cape Canaveral Air Force Station in Florida on March 7, 2017. It will propel the Orion EM-1 crew module around the Moon. The SLS-1/Orion EM-1 launch is currently slated for late 2018 launch from NASA’s Kennedy Space Center. Credit: ULA

All major elements of the SLS will be assembled for flight inside the high bay of NASA’s iconic Vehicle Assembly Building which is undergoing a major overhaul to accommodate the SLS. The VAB high bay was extensively refurbished to convert it from Space Shuttle to SLS assembly and launch operations.

NASA’s Space Launch System (SLS) blasts off from launch pad 39B at the Kennedy Space Center in this artist rendering showing a view of the liftoff of the Block 1 70-metric-ton (77-ton) crew vehicle configuration. Credit: NASA/MSFC

For SLS-1 the mammoth booster will launch in its initial 70-metric-ton (77-ton) Block 1 configuration with a liftoff thrust of 8.4 million pounds – more powerful than NASA’s Saturn V moon landing rocket.

Components of the SLS-1 rocket are being manufactured at NASA’s Michoud Assembly Facility and elsewhere around the country by numerous suppliers.

Michoud is building the huge liquid oxygen/liquid hydrogen SLS core stage fuel tank, derived from the Space Shuttle External Tank (ET) – as I detailed here.

The liquid hydrogen tank qualification test article for NASA’s new Space Launch System (SLS) heavy lift rocket lies horizontally after final welding was completed at NASA’s Michoud Assembly Facility in New Orleans in July 2016. Credit: Ken Kremer/kenkremer.com

The ICPS sits on top of the SLS core stage.

The next Delta IV rocket launching with a Delta Cryogenic Second Stage is tentatively slated for March 14 from pad 37 at the Cape.

The Orion EM-1 capsule is currently being manufactured at the Neil Armstrong Operations and Checkout Building at the Kennedy Space Center by prime contractor Lockheed Martin.

Orion crew module pressure vessel for NASA’s Exploration Mission-1 (EM-1) is unveiled for the first time on Feb. 3, 2016 after arrival at the agency’s Kennedy Space Center (KSC) in Florida. It is secured for processing in a test stand called the birdcage in the high bay inside the Neil Armstrong Operations and Checkout (O&C) Building at KSC. Launch to the Moon is slated in 2018 atop the SLS rocket. Credit: Ken Kremer/kenkremer.com

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

File photo of the ULA Delta Mariner barge arriving in Port Canaveral, Florida after transporting rocket hardware from Decatur, Alabama

Catch ‘The Great American Occultation’ of Aldebaran Saturday Night

The Moon nearing Aldebaran on February 5th, 2017. Image credit and copyright: Chris Lyons.
The Moon nearing Aldebaran on February 5th, 2017. Image credit and copyright: Chris Lyons.

Ever watch the Moon cover up a star? There’s a great chance to see just such an event this coming weekend, when the waxing gibbous Moon occults (passes in front of)  the bright star Aldebaran for much of North America on Saturday night, March 4th.

Shining at magnitude +0.85, Aldebaran is the brightest star that lies along the Moon’s path in the current epoch, and is one of four +1st magnitude stars that the Moon can occult. The other three are Regulus, Antares and Spica. This is the 29th in a series of 49 occultations of Aldebaran worldwide spanning from January 29th, 2015 to September 3rd, 2018, meaning Aldebaran hides behind the Moon once every lunation as it crosses through the constellation Taurus and the Hyades open star cluster in 2017. Like eclipses belonging to the same saros cycle, successive occultations of bright stars shift westward by about 120 degrees westward longitude and slowly drift to the north. Europe saw last month’s occultation of Aldebaran, and Asia is up next month on April 1st.

The occultation footprint for Saturday night’s event. Credit: Occult 4.2 software.

All of the contiguous ‘lower 48 states’ except northern New England see Saturday night’s occultation, and under dark skies, to boot. It’s a close miss for Canada. Mexico, central America and the Caribbean will also witness the event under dark skies. Hawaii will see the event under daytime skies. We can attest that this is indeed possible using binocs or a telescope, as we caught Aldebaran near the daytime Moon during last month’s event.

Occultations give us a chance to see a split second magic act, in a Universe that often unfolds over eons and epochs. The motion you’re seeing is mostly that of the Moon, and to a lesser extent, that of the Earth as the star abruptly ‘winks out’.

Observers in northern tier states might witness an additional spectacle, as Aldebaran grazes the northern limb of the Moon. This can make for an unforgettable sight, as the star successively winks in at out from behind lunar peaks and valleys. The graze line for Saturday night follows the U.S./Canadian border from Washington state, Idaho and Montana, then transects North Dakota, Minnesota just below Duluth and northern Wisconsin, Michigan and New York and Connecticut. Brad Timerson over at the international Occultation Timing Association has a good page set up for the circumstances for the grazing event, and the IOTA has a page detailing ingress (start) and egress times for the event for specific cities.

The northern limit grazeline for Saturday night’s occultation. Credit: USAF/Wikimedia Commons/Dave Dickinson

You’ll be able to see the occultation of Aldebaran with the unaided eye, no telescope over binocular needed, though it will be fun to follow along with optics as well. The ingress along the leading dark limb of the Moon is always more dramatic, while reemergence on the bright limb is a more subtle affair.

The path of the occultation for select cities. Credit: Stellarium.

A simple video aimed afocally through a telescope eyepiece can easily capture the event. We like to run WWV radio on AM shortwave in the background while video recording so as to get a good time hack of the event on audio. Finally, set up early, watch those battery levels in the frigid March night, and be sure to balance out your exposure times to capture both Aldebaran and the dazzling limb of the Moon.

Can you see it? The Moon paired with Aldebaran on February 5th. Image credit and copyright: Lucca Ruggiero.

Anyone Live-casting the event? It’ll be a tough one low to the horizon here in central Florida, but a livestream would certainly be possible for folks westward with Aldebaran and the Moon high in the sky. Let us know of any planned webcasts, and we’ll promote accordingly.

The Moon also occults several other bright stars this week, leading up to an occultation of Regulus on March 10th favoring the southern Atlantic. Read all about occultations, eclipses, comets and more in our free e-book, 101 Astronomical Events for 2017 from Universe Today.

Don’t miss Saturday night’s stunning occultation, and let us know of your tales of astronomical tribulation and triumph.

-Send those astro-images in to Universe Today’s Flickr forum, and you might just see ’em featured here in a future article.

Elon Musk Announces Daring SpaceX Dragon Flight Beyond Moon with 2 Private Astronauts in 2018

SpaceX CEO Elon Musk announced plans on Feb. 27, 2017 to launch a commercial crew SpaceX Dragon to beyond the Moon and back with two private astronauts in 2018 using a SpaceX Falcon Heavy launching from the Kennedy Space Center. Credit: SpaceX
SpaceX CEO Elon Musk announced plans on Feb. 27, 2017 to launch a commercial crew SpaceX Dragon to beyond the Moon and back with two private astronauts in 2018 using a SpaceX Falcon Heavy launching from the Kennedy Space Center. Credit: SpaceX

KENNEDY SPACE CENTER, FL – Elon Musk, billionaire founder and CEO of SpaceX, announced today (27 Feb) a daring plan to launch a commercial manned journey “to beyond the Moon and back” in 2018 flying aboard an advanced crewed Dragon spacecraft paid for by two private astronauts – at a media telecon.

Note: Check back again for updated details on this breaking news story.

“This is an exciting thing! We have been approached to do a crewed mission to beyond the Moon by some private individuals,” Musk announced at the hastily arranged media telecon just concluded this afternoon which Universe Today was invited to participate in.

The private two person crew would fly aboard a human rated Dragon on a long looping trajectory around the moon and far beyond on an ambitious mission lasting roughly eight days and that could blastoff by late 2018 – if all goes well with rocket and spacecraft currently under development, but not yet flown.

“This would do a long leap around the moon,” Musk said. “We’re working out the exact parameters, but this would be approximately a week long mission – and it would skim the surface of the moon, go quite a bit farther out into deep space, and then loop back to Earth. I’m guessing probably distance wise, maybe 300,000 or 400,000 miles.”

The private duo would fly on a ‘free return’ trajectory around the Moon – but not land on the Moon like NASA did in the 1960s and 1970s.

But they would venture further out into deep space than any humans have ever been before.

No human has traveled beyond low Earth orbit in more than four decades since Apollo 17 – NASA’s final lunar landing mission in December 1972, and commanded by recently deceased astronaut Gene Cernan.

“Like the Apollo astronauts before them, these individuals will travel into space carrying the hopes and dreams of all humankind, driven by the universal human spirit of exploration,” says SpaceX.

Musk said the private crew of two would launch on a Dragon 2 crew spacecraft atop a SpaceX Falcon Heavy booster from historic pad 39A at the Kennedy Space Center in Florida – the same pad that just reopened for business last week with the successful launch of a cargo Dragon to the International Space Station (ISS) for NASA on the CRS-10 mission.

“They are two paying customers,” Musk elaborated. “They’re very serious about it.”

“But nobody from Hollywood.”

“They will fly using a Dragon 2 and Falcon Heavy next year in 2018.”

“The lunar orbit mission would launch about 6 months after the [first] NASA crew to the space station on Falcon 9/Dragon 2,” Musk told Universe Today.

Musk noted they had put down “a significant deposit” and will undergo extensive flight training.

He declined to state the cost – but just mentioned it would be more than the cost of a Dragon seat for a flight to the space station, which is about $58 million.

The Falcon Heavy, once operational, will be the most powerful rocket in the world. Credit: SpaceX

SpaceX is currently developing the commercial crew Dragon spacecraft for missions to transport astronauts to low Earth orbit (LEO) and the International Space Station (ISS) under a NASA funded a $2.6 billion public/private contract. Boeing was also awarded a $4.2 Billion commercial crew contract by NASA to build the crewed CST-100 Starliner for ISS missions.

The company is developing the triple barreled Falcon Heavy with its own funds – which is derived from the single barreled Falcon 9 rocket funded by NASA.

But neither the Dragon 2 nor the Falcon Heavy have yet launched to space and their respective maiden missions haven been postponed multiple time for several years – due to a combination of funding and technical issues.

So alot has to go right for this private Moonshot mission to actually lift off by the end of next year.

NASA is developing the new SLS heavy lift booster and Orion capsule for deep space missions to the Moon, Asteroids and Mars.

The inaugural uncrewed SLS/Orion launch is slated for late 2018. But NASA just announced the agency has started a feasibility study to examine launching a crew on the first Orion dubbed Exploration Mission-1 (EM-1) on a revamped mission in 2019 rather than 2021 on EM-2.

Thus the potential exists that SpaceX could beat NASA back to the Moon with humans.

I asked Musk to describe the sequence of launches leading up to the private Moonshot and whether a crewed Dragon 2 would launch initially to the ISS.

Musk replied that SpaceX hopes to launch the first uncrewed Dragon 2 test flight to the ISS by the end of this year on the firm’s Falcon 9 rocket – almost identical to the rocket that just launched on Feb. 19 from pad 39A.

That would be followed by crewed launch to the ISS around mid-2018 and the private Moonshot by the end of 2018.

“The timeline is we expect to launch a human rated Dragon 2 on Falcon 9 by the end of this year, but without people on board just for the test flight to the space station,” Musk told Universe Today.

“Then about 6 months later we would fly with a NASA crew to the space station on Falcon 9/Dragon 2.”

“And then about 6 months after that, assuming the schedule holds by end of next year, is when we would do the lunar orbit mission.”

I asked Musk about whether any heat shield modifications to Dragon 2 were required?

“The heat shield is quite massively over designed,” Musk told me during the telecom.

“It’s actually designed for multiple Earth orbit reentry missions – so that we can actually do up to 10 reentry missions with the same heat shield.”

“That means it can actually do at least 1 lunar orbit reentry velocity missions, and conceivably maybe 2.”

“So we do not expect any redesign of the heat shield.”

The reentry velocity and heat generated from a lunar mission is far higher than from a low Earth orbit mission to the space station.

Nevertheless the flight is not without risk.

The Dragon 2 craft will need some upgrades. For example “a deep space communications system” with have to be installed for longer trips, said Musk.

Dragon currently is only equipped for shorter Earth orbiting missions.

The flight must also be approved by the FAA before its allowed to blastoff – as is the case with all commercial launches like the Feb. 19 Falcon 9/Cargo Dragon mission for NASA.

SpaceX founder and CEO Elon Musk. Credit: Ken Kremer/kenkremer.com

Musk declined to identify the two individuals or their genders but did say they know one another.

They must pass health and training tests.

“We expect to conduct health and fitness tests, as well as begin initial training later this year,’ noted SpaceX.

The flight itself would be very autonomous. The private passengers will train for emergencies but would not be responsible for piloting Dragon.

Historic maiden blastoff of SpaceX Falcon 9 rocket from Launch Complex 39A at the Kennedy Space Center) at 9:38 a.m. EDT on Feb 19, 2017, on Dragon CRS-10 resupply mission to the International Space Station (ISS) for NASA. Credit: Ken Kremer/kenkremer.com

Musk said he would give top priority to NASA astronauts for the Moonshot mission if the agency wanted to procure the seats ahead of the private passengers.

He noted that SpaceX would have the capability to launch one or 2 private moonshots per year.

“I think this should be a really exciting mission that gets the world really excited about sending people into deep space again. I think it should be super inspirational,” Musk said.

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

SpaceX Falcon 9 rocket launches from pad 39A at the Kennedy Space Center on Feb 19, 2017 for NASA on the Dragon CRS-10 delivery mission to the International Space Station (ISS). Credit: Julian Leek
SpaceX Falcon 9 rocket goes vertical at night atop Launch Complex 39A at the Kennedy Space Center on 19 Feb 2017 as seen after midnight from the pad perimeter. This is the first rocket rolled out to launch from pad 39A since the retirement of NASA’s Space Shuttles in July 2011. Liftoff of the CRS-10 mission slated for 19 Feb 2017. Credit: Ken Kremer/Kenkremer.com
An artist's illustration of the Falcon Heavy rocket. Image: SpaceX
An artist’s illustration of the Falcon Heavy rocket. Image: SpaceX

NASA’s Historic Pad 39A Back in Business with Maiden SpaceX Falcon 9 Blastoff to ISS and Booster Landing

Historic maiden blastoff of a SpaceX Falcon 9 rocket from Launch Complex 39A at the Kennedy Space Center on Dragon CRS-10 resupply mission to the International Space Station (ISS) at 9:38 a.m. EDT on Feb 19, 2017. Photo taken from the VAB roof. Credit: Ken Kremer/kenkremer.com
Historic maiden blastoff of a SpaceX Falcon 9 rocket from Launch Complex 39A at the Kennedy Space Center on Dragon CRS-10 resupply mission to the International Space Station (ISS) at 9:38 a.m. EDT on Feb 19, 2017. Photo taken from the VAB roof. Credit: Ken Kremer/kenkremer.com

KENNEDY SPACE CENTER, FL – After a six year lull NASA’s historic pad 39A roared back to business this morning with the dramatic maiden blastoff of a SpaceX Falcon 9 rocket, on a critical cargo delivery mission for NASA to the space station – while simultaneously landing the first stage back on the ground at the Cape on a secondary mission aimed at one day propelling humans to Mars.

The era of undesired idleness for America’s most famous launch pad was broken at last by the rumbling thunder of a SpaceX Falcon 9 that ignited at 9:38 a.m. EST Sunday morning, Feb 19, at Launch Complex 39A at NASA’s Kennedy Space Center.

The storied liftoff took place under heavily overcast skies with rain showers nearby under seemingly improbable weather conditions.

After liftoff, the rocket disappeared within seconds and never really reappeared in the local area until the final moments of the descent of the first stage – which nailed a nearly perfect dead center touchdown at Landing Zone 1 at the Cape some 9 minutes after launch.

Final descent of the SpaceX Falcon 9 1st stage landing as seen from the VAB roof under heavily overcast skies after Feb. 19, 2017 launch from pad 39 at the Kennedy Space Center. The booster successfully soft landed upright at Landing Zone-1 (LZ-1) accompanied by multiple sonic booms at Cape Canaveral Air Force Station, Florida, about 9 minutes after launch to the International Space Station (ISS). Credit: Ken Kremer/kenkremer.com

Nevertheless the Falcon 9 launch was a smashing success and probably the loudest I have ever witnessed since the shuttle era ended. Watching from atop the roof of the iconic VAB, I can report the building did experience some rather exciting rattling!

And it was SpaceX’s first daylight booster landing back at the Cape. The two earleir touchdowns were at night – most recently for the CRS-9 mission last summer in July 2016.

The goal of the mission was aimed at launching the SpaceX Dragon cargo freighter to deliver over 5500 pounds of science and supplies to the orbiting science outpost on the CRS-10 mission.

The Dragon spacecraft was successfully delivered in Earth orbit and is on course for the International Space Station (ISS) on the CRS-10 mission.

As a secondary side goal, SpaceX successfully carried out a propulsive soft landing of the 156 foot tall first stage of the Falcon 9 rocket on land at Cape Canaveral Air Force Station’s Landing Zone 1 (LZ-1), located about 9 miles south of KSC launch complex 39A.

The touchdown, like the launch was completely obscured until the final moments of the descent, when it suddenly and magnificently reappeared as a strange pale colored cylinder emitting a long yellow flame after dropping below the low hanging clouds.

The booster successfully accomplished a propulsive upright soft landing at Landing Zone-1 (LZ-1) accompanied by multiple sonic booms at Cape Canaveral Air Force Station, Florida, about 9 minutes after launch.

This was the 8th first stage booster that SpaceX has successfully recovered either by land or on a tiny droneship at sea over the past year.

The goal is to refurbish and recycle the 156 foot tall first stage boosters for relaunch with a new payload.

SpaceX CEO billionaire Elon Musk hopes that by reusing the spent booster, he can drastically cut the cost of access to space and that will one day lead to human colonies and a “City on Mars.”

Historic maiden blastoff of SpaceX Falcon 9 rocket from Launch Complex 39A at the Kennedy Space Center) at 9:38 a.m. EDT on Feb 19, 2017, on Dragon CRS-10 resupply mission to the International Space Station (ISS) for NASA. Credit: Ken Kremer/kenkremer.com

The dream of Bob Cabana, former astronaut and now Center Director at the Kennedy Space Center NASA’s, to turn KSC into a multiuser spaceport open to utilization by government, industry and entrepreneurs like SpaceX’s billionaire CEO Elon Musk is finally coming to fruition in a blaze of glory.

“I’m so proud of this team for all the dedication and hard work,” said Cabana.

SpaceX Falcon 9 rocket goes vertical at night atop Launch Complex 39A at the Kennedy Space Center on 19 Feb 2017 as seen after midnight from the pad perimeter. This is the first rocket rolled out to launch from pad 39A since the retirement of NASA’s Space Shuttles in July 2011. Liftoff of the CRS-10 mission slated for 19 Feb 2017. Credit: Ken Kremer/Kenkremer.com

Today’s launch counts as the first commercial launch from Kennedy’s historic pad.

The storied pad initially sent NASA astronauts to the Moon soon after the dawn of the Space Age during the Apollo/Saturn era and was then significantly overhauled to serve as the on ramp for NASA space shuttles for another three decades.

SpaceX has now transformed pad 39A for launches of the Falcon 9. A bright future lies ahead with launches of the heavy lift Falcon Heavy later this year and a renewal of manned launches of astronauts some time in 2018.

Dragon is carrying more than 5500 pounds of equipment, gear, food, crew supplies, hardware and NASA’s Stratospheric Aerosol Gas Experiment III (SAGE III) ozone mapping science payload in support of the Expedition 50 and 51 crew members.

SAGE III will measure stratospheric ozone, aerosols, and other trace gases by locking onto the sun or moon and scanning a thin profile of the atmosphere.

Engineers at work processing NASA’s Stratospheric Aerosol and Gas Experiment III, or SAGE III instrument inside the Space Station Processing Facility at NASA’s Kennedy Space Center in Florida during exclusive visit by Ken Kremer/Universe Today in December 2016. Technicians are working in a super-clean ‘tent’ built in the SSPF high bay to protect SAGE III’s special optics and process the Ozone mapper for upcoming launch on the SpaceX CRS-10 Dragon cargo flight to the International Space Station in early 2017. Credit: Ken Kremer/kenkremer.com

The LIS lightning mapper will measure lightning from the altitude of the ISS. NASA’s RAVEN experiment will test autonomous docking technologies for spacecraft.

The research supplies and equipment brought up by Dragon will support over 250 scientific investigations to advance knowledge about the medical, psychological and biomedical challenges astronauts face during long-duration spaceflight.

As of today we are at last launching rockets again from the Kennedy Space Center – thanks to SpaceX and the Falcon 9. What a tremendous return to space !

Watch for Ken’s onsite CRS-10 mission reports direct from the Kennedy Space Center and Cape Canaveral Air Force Station, Florida.

SpaceX Falcon 9 rocket goes vertical at night atop Launch Complex 39A at the Kennedy Space Center on 19 Feb 2017 as seen after midnight from the pad perimeter. This is the first rocket rolled out to launch from pad 39A since the retirement of NASA’s Space Shuttles in July 2011. Liftoff of the CRS-10 mission slated for 19 Feb 2017. Credit: Ken Kremer/Kenkremer.com

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

SpaceX Falcon 9 rocket rests horizontal atop Launch Complex 39A at the Kennedy Space Center on 17 Feb 2017 as seen from inside the pad perimeter. Technicians work to prepare the rocket for launch. Liftoff of the CRS-10 mission is slated for 19 Feb 2017. Credit: Ken Kremer/Kenkremer.com

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Learn more about SpaceX CRS-10 launch to ISS, ULA SBIRS GEO 3 launch, EchoStar launch GOES-R launch, Heroes and Legends at KSCVC, OSIRIS-REx, InSight Mars lander, ULA, SpaceX and Orbital ATK missions, Juno at Jupiter, SpaceX AMOS-6, ISS, ULA Atlas and Delta rockets, Orbital ATK Cygnus, Boeing, Space Taxis, Mars rovers, Orion, SLS, Antares, NASA missions and more at Ken’s upcoming outreach events at Kennedy Space Center Quality Inn, Titusville, FL:

Feb 18 – 19: “SpaceX CRS-10 launch to ISS, ULA Atlas SBIRS GEO 3 launch, EchoStar 19 comsat launch, GOES-R weather satellite launch, OSIRIS-Rex, SpaceX and Orbital ATK missions to the ISS, Juno at Jupiter, ULA Delta 4 Heavy spy satellite, SLS, Orion, Commercial crew, Curiosity explores Mars, Pluto and more,” Kennedy Space Center Quality Inn, Titusville, FL, evenings

Through The Nuclear Looking Glass: The Moon & The Bomb

continents
An impact between a Mars-sized protoplanet and early Earth is the most widely-accepted origin of the Moon. Did smaller impacts seed the formation of continents? (NASA/JPL-Caltech)

For centuries, scientists have been attempting to explain how the Moon formed. Whereas some have argued that it formed from material lost by Earth due to centrifugal force, others asserted that a preformed Moon was captured by Earth’s gravity. In recent decades, the most widely-accepted theory has been the Giant-impact hypothesis, which states that the Moon formed after the Earth was struck by a Mars-sized object (named Theia) 4.5 billion years ago.

According to a new study by an international team of researchers, the key to proving which theory is correct may come from the first nuclear tests conducted here on Earth, some 70 years ago. After examining samples of radioactive glass obtained from the Trinity test site in New Mexico (where the first atomic bomb was detonated), they determined that samples of Moon rocks showed a similar depletion of volatile elements.

Continue reading “Through The Nuclear Looking Glass: The Moon & The Bomb”

See a Flirtatious Lunar Eclipse This Friday Night

Penumbral lunar eclipse Oct. 18-19, 2013. Credit: AstroTripper2000

This sequence of photos taken on October 18, 2013 nicely show the different phases of a penumbral lunar eclipse. The coming penumbral eclipse will likely appear even darker because Earth’s shadow will shade to the top (northern) half of the Moon rich in dark lunar “seas” at maximum. Credit: AstroTripper 2000

Not many people get excited about a penumbral eclipse, but when it’s a deep one and the only lunar eclipse visible in North America this year, it’s worth a closer look. What’s more, this Friday’s eclipse happens during convenient, early-evening viewing hours. No getting up in the raw hours before dawn.

Lunar eclipses — penumbral, partial and total — always occur at Full Moon, when the Moon, Earth and Sun line up squarely in a row in that order. Only then does the Moon pass through the shadow cast by our planet. Credit: Starry Night with additions by the author

During a partial or total lunar eclipse, the full moon passes first through the Earth’s outer shadow, called the penumbra, before entering the dark, interior shadow or umbra. The penumbra is nowhere near as dark as the inner shadow because varying amounts of direct sunlight filter into it, diluting its duskiness.

To better understand this, picture yourself watching the eclipse from the center of the Moon’s disk (latitude 0°, longitude 0°). As you look past the Earth toward the Sun, you would see the Sun gradually covered or eclipsed by the Earth. Less sunlight would be available to illuminate the Moon, so your friends back on Earth would notice a gradual dimming of the Moon, very subtle at first but becoming more noticeable as the eclipse progressed.

This diagram shows an approximation of the Sun’s position and size as viewed by an observer at the center of the lunar disk during Friday’s penumbral eclipse. More sunlight shines across the Moon early in the eclipse, making the penumbral shadow very pale, but by maximum (right), half the sun is covered and the Moon appears darker and duskier as seen from Earth. During a total lunar eclipse, the sun is hidden completely. Credit: Bob King with Earth image by NASA

As the Moon’s leading edge approached the penumbra-umbra border, the Sun would narrow to a glaring sliver along Earth’s limb for our lucky lunar observer. Back on Earth, we’d notice that the part of the Moon closest to the umbra looked strangely gray and dusky, but the entire lunar disk would still be plainly visible. That’s what we’ll see during Friday’s eclipse. The Moon will slide right up to the umbra and then roll by, never dipping its toes in its dark waters.

During a partial eclipse, the Moon keeps going into the umbra, where the Sun is completely blocked from view save for dash of red light refracted by the Earth’s atmosphere into what would otherwise be an inky black shadow. This eclipse, the Moon only flirts with the umbra.

The moon’s orbit is tilted 5.1 degrees in relation to Earth’s orbit, so most Full Moons, it passes above or below the shadow and no eclipse occurs. Credit: Bob King

Because the moon’s orbit is tilted about 5° from the plane of Earth’s orbit, it rarely lines up for a perfect bullseye total eclipse: Sun – Earth – Moon in a straight line in that order. Instead, the moon typically passes a little above or below (north or south) of the small, circle-shaped shadow cast by our planet, and no eclipse occurs. Or it clips the outer edge of the shadow and we see — you guessed it — a penumbral eclipse.

Earth’s shadow varies in size depending where you are in it. Standing on the ground during twilight, it can grow to cover the entire sky, but at the moon’s distance of 239,000 miles, the combined penumbra and umbra span just 2.5° of sky or about the width of your thumb held at arm’s length.

The moon passes through Earth’s outer shadow, the penumbra, on Feb. 10-11. In the umbra, the sun is blocked from view, but the outer shadow isn’t as dark because varying amounts of sunlight filter in to dilute the darkness. Times are Central Standard. Credit: F. Espenak, NASA’s GFSC with additions by the author

Because the Moon travels right up to the umbra during Friday’s eclipse, it will be well worth watching.The lower left  or eastern half of the moon will appear obviously gray and blunted especially around maximum eclipse as it rises in the eastern sky that Friday evening over North and South America. I should mention here that the event is also visible from Europe, Africa, S. America and much of Asia.

This map shows where the eclipse will be visible. Most of the U.S. will see at least part of the event. Credit: F. Espenak, NASA’s GFSC

For the U.S., the eastern half of the country gets the best views. Here are CST and UT times for the different stages. To convert from CST, add an hour for Eastern, subtract one hour for Mountain and two hours for Pacific times. UT stands for Universal Time, which is essentially the same as Greenwich or “London” Time except when Daylight Saving Time is in effect:

This is a simulated view of the Full Snow Moon at maximum eclipse Friday evening low in the eastern sky alongside the familiar asterism known as the Sickle of Leo. Created with Stellarium

Eclipse begins: 4:34 p.m. (22:34 p.m. UT)
Maximum eclipse (moon deepest in shadow): 6:44 p.m. (00:43 UT Feb. 11)
Eclipse ends: 8:53 p.m. (2:53 UT Feb. 11)

You can see that the eclipse plays out over more than 4 hours, though I don’t expect most of us will either be able or would want to devote that much time. Instead, give it an hour or so when the Moon is maximally in shadow from 6 to 7:30 p.m. CST; 7-8:30 EST; 5-6:30 p.m. MST and around moonrise Pacific time.

This should be a fine and obvious eclipse because around the time of maximum, the darkest part of the penumbra shades the dark, mare-rich northern hemisphere of the Moon. Dark plus dark equals extra dark! Good luck and clear skies!

Superbowl Smackdown: Watch the Moon Occult Aldebaran on Sunday

Daytime Aldebaran
Can you see it? Dave Walker accidentally (!) caught Aldebaran near the daytime Moon on October 19th, 2016. Image credit and copyright: Dave Walker

Daytime Aldebaran
Can you see it? Dave Walker accidentally (!) caught Aldebaran near the daytime Moon on October 19th, 2016. Image credit and copyright: Dave Walker

Author’s note: This Superbowl Sunday event and 101 more like it are featured in our latest free e-book, 101 Astronomical Events for 2017, out now from Universe Today.

Sure, this Superbowl Sunday brings with it the promise of sacks, fumbles and tackles… but have you ever seen the Moon run down a star in the end zone? Just such an event, referred to as an occultation, happens this weekend for folks living around the Mediterranean and — just maybe for some sharp-eyed, telescope-owning observers based around the Caribbean region — this coming weekend.

Update: be sure to watch this Sunday’s occultation of Aldebaran by the Moon courtesy of Gianluca Masi and the Virtual Telescope Project live starting at 22:00 UT/5:00 PM EST:

Live starting at 22:00 UT. Credit: The Virtual Telescope Project

We’re talking about Sunday’s occultation of the bright star Aldebaran by the 64% illuminated waxing gibbous Moon. This is the 2nd occultation of Aldebaran by the Moon for 2017 and the 28th of the current ongoing cycle of 49 spanning from January 29th, 2015 to September 3rd, 2018. The Moon actually occults Aldebaran and Regulus once for every lunation in 2017. We won’t have another year featuring the occultations of two +1st magnitude stars (Spica and Antares) again until 2024.

Occultation footprint
The footprint for the February 5th occultation of Aldebaran by the Moon. The broken lines show where the occultation occurs during daytime, and the solid lines denote where the occultation occurs under dark skies. Image credit: occult 4.2.

The event occurs under dark skies for observers based around the Mediterranean and under daytime afternoon skies for folks in central America, the Caribbean, northern South America and the Florida peninsula, including Astroguyz HQ based in Spring Hill, just north of the Tampa Bay area. We’ve managed to spy Aldebaran near the daytime Moon while the Sun was still above the horizon using binocs, and can attest that the +1st magnitude star is indeed visible, if you know exactly where to look for it.

Note that, like solar eclipses belonging to the same saros cycle, occultations of Aldebaran in the ongoing cycle drift north and westward from one to the next, to the tune of about 120 degrees longitude. Though most of North America sits this one out, we do get a front row seat for next lunation’s occultation of Aldebaran on the evening of March 4/5th. The next one is the best bright star occultation of Aldebaran by the Moon for North America in 2017. And be sure to check out the Moon this Sunday evening after the big game, and note Aldebaran hanging just off of its bright limb.

Moon motion
No, the wind is not shaking the ‘scope… Sharin Ahmad chronicled the motion of the Moon past Aldebaran from Kuala Lumpur, Malaysia last month. Image credit and copyright: Shahrin Ahmad (@shahgazer)

The ref will have a close call to make for this one. The northern grazeline in Florida might make this an especially interesting event to watch, though it’ll be challenge, as the occultation occurs in the afternoon under daylight skies. This crosses right along near the cities of Jacksonville and Gainsville. Clear, deep blue high contrast skies are key, and we’ll be watching from Astroguyz HQ north of Tampa Bay during this event.

The northern grazeline across the Florida peninsula for Sunday’s ‘big game’. Credit: Dave Dickinson.

Here are some key times from the occultation zone (noted in Universal Time):

Tampa, Florida

Ingress: 20:08 UT/Moon altitude: 23 degrees

Egress: 20:34 UT/Moon altitude: 29 degrees

Bogota, Columbia

Ingress: 19:34 UT/ Moon Altitude: 49 degrees

Egress: 20:29 UT/ Moon altitude: 31 degrees

The view from Jimena de la Frontera Spain just before the occultation. Credit: Stellarium.

Rome, Italy

Ingress: 20:21 UT/Moon altitude: 37 degrees

Egress: 23:12 UT/ Moon altitude: 28 degrees

Tel Aviv, Israel

Ingress: 22:39 UT/Moon altitude: 16 degrees

Egress: 23:29 UT/Moon altitude: 5 degrees

Casablanca, Morocco

Ingress: 21:49 UT/ Moon altitude: 61 degrees

Egress: 23:07 UT/ Moon altitude: 45 degrees

Note that this occultation spans five continents, a truly worldwide event. The International Occultation Timing Association (IOTA) maintains a page with an extensive list of times for cities worldwide. Note that when the Moon tackles Aldebaran, its also crossing the scrimmage line of the Hyades open cluster, so expect numerous occultations of fainter stars worldwide as well.

Aldebaran is the brightest star along the Moon’s path in our current epoch, along with runner-ups Spica, Regulus and Antares. Though Aldebaran is 1.5 times the mass of our Sun, it’s also 65 light years away, and only appears 20 milliarcseconds (mas) in size, about the equivalent of a 40 meter diameter crater from the distance of the Moon. Still, you might just notice a brief pause as Aldebaran fades then winks out on the dark limb of the Moon, a tiny hitch betraying its diminutive angular size.

And the clockwork gears of that biggest game of all, the Universe, grind on. Don’t miss this first big ticket astronomical event for February 2017, coming to a sky above you. Next up, we’ll watching out for another bright star occultation, two eclipses, and the close passage of a comet near the Earth.

Stay tuned!

NASA Tribute Exhibit Honors Fallen Apollo 1 Crew 50 Years After Tragedy

The new tribute to Apollo 1 at NASA’s Kennedy Space Center was opened during a dedication ceremony on Jan. 27, 2017, 50 years after the crew was lost - with a keynote speech by Kennedy Space Center Director and former astronaut Bob Cabana. The entrance to the Apollo 1 tribute shows the three astronauts who perished in a fire at the launch pad on Jan. 27, 1967 during training for the mission. The astronauts are, from left, Gus Grissom, Ed White II and Roger Chaffee. Credit: Ken Kremer/kenkremer.com

The new tribute to Apollo 1 at NASA’s Kennedy Space Center was opened during a dedication ceremony on Jan. 27, 2017, 50 years after the crew was lost – with a keynote speech by Kennedy Space Center Director and former astronaut Bob Cabana. The entrance to the Apollo 1 tribute shows the three astronauts who perished in a fire at the launch pad on Jan. 27, 1967 during training for the mission. The astronauts are, from left, Gus Grissom, Ed White II and Roger Chaffee. Credit: Ken Kremer/kenkremer.com

KENNEDY SPACE CENTER VISITOR COMPLEX, FL – NASA unveiled a new tribute exhibit honoring three fallen astronaut heroes 50 years to the day of the Apollo 1 tragedy on January 27, 1967 when the three man crew perished in a flash fire on the launch pad during a capsule test that was not considered to be dangerous.

The Apollo 1 prime crew comprising NASA astronauts Gus Grissom, Ed White II and Roger Chaffee were killed during routine practice countdown testing when a fire suddenly erupted inside the cockpit as they were strapped to their seats in their Apollo command module capsule, on a Friday evening at 6:31 p.m. on January 27, 1967.

“It’s been 50 years since the crew of Apollo 1 perished in a fire at the launch pad, but the lives, accomplishments and heroism of the three astronauts are celebrated in a dynamic, new tribute that is part museum, part memorial and part family scrapbook,” says a NASA narrative that aptly describes the exhibit and the memorial ceremony I attended at the Apollo/Saturn V Center at NASA’s Kennedy Space Center in Florida on Friday, Jan. 27, 2017 on behalf of Universe Today.

It was the first disaster with a human crew and the worst day in NASA’s storied history to that point.

The tribute is named called “Ad Astra Per Aspera – A Rough Road Leads to the Stars.”

A new tribute to the crew of Apollo 1, who perished in a fire at the launch pad on Jan. 27, 1967, opened at NASA’s Kennedy Space Center on the 50th anniversary of that fatal day that cost the lives of all three crewmembers. The tribute exhibit at the Apollo/Saturn Center highlights the lives and careers of NASA astronauts Gus Grissom, Ed White II and Roger Chaffee with artifacts and photos. Credit: Ken Kremer/kenkremer.com

At the tribute dedication ceremony Kennedy Space Center Director and former astronaut Bob Cabana said the families of the fallen crew gave their approvals and blessing to the efforts that would at last tell the story of Apollo 1 to all generations – those who recall it and many more to young or not yet born to remember the tragedy of the early days of America’s space program.

“It’s long overdue,” said KSC center director and former astronaut Bob Cabana at the KSC dedication ceremony to family, friends and invited guests colleagues. “I’m proud of the team that created this exhibit.”

“Ultimately, this is a story of hope, because these astronauts were dreaming of the future that is unfolding today,” said Cabana. Generations of people around the world will learn who these brave astronauts were and how their legacies live on through the Apollo successes and beyond.”

The exhibit “showcases clothing, tools and models that define the men as their parents, wives and children saw them as much as how the nation viewed them.”

The main focus was to introduce the astronauts to generations who never met them and may not know much about them or the early space program, says NASA.

“This lets you now meet Gus Grissom, Ed White and Roger Chaffee as members of special families and also as members of our own family,” said NASA’s Luis Berrios, who co-led the tribute design that would eventually involve more than 100 designers, planners and builders to realize.

“You get to know some of the things that they liked to do and were inspired by. You look at the things they did and if anyone does just one of those things, it’s a lifetime accomplishment and they did all of it and more.”

Apollo 1 astronauts Gus Grissom, Ed White II and Roger Chaffee stand near Cape Kennedy’s Launch Complex 34 during mission training in January 1967. On Jan. 27, 1967, the three astronauts were preparing for what was to be the first manned Apollo flight. The astronauts were sitting atop the launch pad for a pre-launch test when a fire broke out in their Apollo capsule and they perished. Credit: NASA

The crew and the Apollo 1 command module were stacked atop the Saturn 1B rocket at Launch Complex 34 on what is now Cape Canaveral Air Force Station in Florida.

During the “plugs out” test the Saturn 1B rocket was not fueled. But the fatal flaw was the atmosphere of pure oxygen for the astronauts to breath inside the sealed Apollo 1 command module which was pressurized to 16.7 psi.

The three-part hatch that was in place on the Apollo 1 spacecraft is shown in a tribute to the crew of Apollo 1 who perished in a fire at the launch pad on Jan. 27, 1967 during training for the mission. This is the first time any part of the Apollo 1 spacecraft has been displayed publicly and is part of the tribute exhibit at NASA’s Kennedy Space Center, Florida. A version of the hatch after it was redesigned is also showcased as an example of improvements NASA made throughout the agency and to the Apollo spacecraft that would later carry astronauts to the moon. Credit: Ken Kremer/kenkremer.com

Another significantly contributing fatal flaw was the inward opening three layered hatch that took some 90 seconds to open under the best of conditions.

After working all afternoon through the practice countdown and encountering numerous problems, something went terribly awry. Without warning a flash fire erupted in the cockpit filled with 100 percent oxygen and swiftly spread uncontrollably creating huge flames licking up the side of the capsule, acrid smoke and a poisonous atmosphere that asphyxiated, burned and killed the crew.

With the scorching temperatures spiking and pressures rapidly rising in a closed system, the capsule exploded some 20 seconds after the fire started. And because of the pressure buildup inside with flames licking up the sides and the toxic atmosphere generated from burning materials, the crew succumbed and could not turn the latch to pull open the hatch against the pressure.

The pad crew tried bravely in vain to save them, fighting heavy smoke and fire and fearing that the attached launch abort system on top of the capsule would ignite and kill them all too.

An investigation would determine that the fire was likely caused by a spark from frayed wiring, perhaps originating under Grissom’s seat.

“An electrical short circuit inside the Apollo Command Module ignited the pure oxygen environment and within a matter of seconds all three Apollo 1 crewmembers perished,” NASA concluded.

NASA and contractor North American Aviation completely redesigned the capsule with major engineering changes including an atmosphere of 60 percent oxygen and 40 percent nitrogen at 5 psi blower pressure, new hatch that could open outwards in 5 seconds, removing flammable materials among many others that would make the Apollo spacecraft much safer for the upcoming journeys to the moon.

The multi-layed hatch serves as the centerpiece of the tribute exhibit. No piece of Apollo 1 has ever before been put on public display. Alongside the old hatch, the new hatch is displayed that was used on all the remaining Apollo missions.

The three-part hatch that was in place on the Apollo 1 spacecraft is shown in a tribute to the crew of Apollo 1 who perished in a fire at the launch pad on Jan. 27, 1967 during training for the mission. This is the first time any part of the Apollo 1 spacecraft has been displayed publicly and is part of the tribute exhibit at NASA’s Kennedy Space Center, Florida. A version of the hatch after it was redesigned is also showcased (right) as an example of improvements NASA made throughout the agency and to the Apollo spacecraft that would later carry astronauts to the moon. Credit: Ken Kremer/kenkremer.com

Display cases highlights the lives and careers of the three astronauts in these NASA descriptions.

Gus Grissom was “one of NASA’s Original Seven astronauts who flew the second Mercury mission, a hunting jacket and a pair of ski boots are on display, along with a small model of the Mercury spacecraft and a model of an F-86 Sabre jet like the one he flew in the Korean War. A slide rule and engineering drafts typify his dedication to detail.”

“The small handheld maneuvering thruster that Ed White II used to steer himself outside his Gemini capsule during the first American spacewalk features prominently in the display case for the West Point graduate whose athletic prowess nearly equaled his flying acumen. An electric drill stands alongside the “zip gun,” as he called the thruster.”

“It was great to juxtaposition it with a drill which was also a tool that Ed loved to use,” Berrios said. “He had a tremendous passion for making things for his family.”

“Roger Chaffee, for whom Apollo 1 would have been his first mission into space, was an esteemed Naval aviator who became a test pilot in his drive to qualify as an astronaut later. Displayed are board games he played with his wife and kids on rare evenings free of training.”

Grissom, White and Chaffee composed NASA’s first three person crew following the one man Mercury program and two man Gemini program, that had just concluded in November 1966 with Gemini 12.

The trio had been scheduled to blastoff on February 21, 1967 on a 14 day long mission in Earth orbit to thoroughly check out the Apollo command and service modules.

Apollo 1 was to be the first launch in NASA’s Apollo moon landing program initiated by President John F. Kennedy in 1961.

Apollo 1 was planned to pave the way to the Moon so that succeeding missions would eventually “land a man on the Moon and return him safely to Earth before this decade is out” as Kennedy eloquently challenged the nation to do.

Legendary Gemini and Apollo astronaut General Thomas Stafford speaks at dedication of new tribute exhibit at NASA’s Kennedy Space Center about the heroic Apollo 1 crew and their contributions to getting us to the Moon on the 50th anniversary of their deaths in the flash fire on Jan. 27, 1967. Stafford was the backup commander of Apollo 1. Credit: Ken Kremer/kenkremer.com

I remember seeing the first news flashes about the Apollo 1 fire on the TV as a child, as it unfolded on the then big three networks. It is indelibly marked in my mind. This new exhibit truly tells the story of these astronaut heroes vividly to those with distant memories and those with little or no knowledge of Apollo 1.

Exit walkway passing through misty projection of Apollo 1 mission patch and crossing over to mock capsule and crew of Grissom, White and Chaffee seated in Apollo 1 Command Module. Family member quotes at left. Credit: Ken Kremer/kenkremer.com

Stay tuned here for Ken’s continuing Earth and Planetary science and human spaceflight news.

Ken Kremer

A Farewell to Plutoshine

Credit:

Looking back at an overexposed Charon and Plutoshine. Credit: NASA/JPL/New Horizons

Sometimes, its not the eye candy aspect of the image, but what it represents. A recent image of Pluto’s large moon Charon courtesy of New Horizons depicting what could only be termed ‘Plutoshine’ caught our eye. Looking like something from the grainy era of the early Space Age, we see a crescent Charon, hanging against a starry background…

So what, you say? Sure, the historic July 14th , 2015 flyby of New Horizons past Pluto and friends delivered images with much more pop and aesthetic appeal. But look closely, and you’ll see something both alien and familiar, something that no human eye has ever witnessed, yet you can see next week.

We’re talking about the reflected ‘Plutoshine‘ on the dark limb of Charon. This over-exposed image was snapped from over 160,000 kilometers distant by New Horizons’ Ralph/Multispectral imager looking back at Charon, post flyby. For context, that’s just shy of half the distance between the Earth and the Moon. “Bigger than Texas” (Cue Armageddon), Charon is about 1200 kilometers in diameter and 1/8th the mass of Pluto. Together, both form the only true binary (dwarf) planetary pair in the solar system, with the 1/80th Earth-Moon pair coming in at a very distant second.

Earthshine on the Moon. Credit: Dave Dickinson

We see reflected sunlight coming off of a gibbous Pluto which is just out of frame, light that left the Sun 4 hours ago and took less than a second to make the final Pluto-Charon-New Horizons bounce. You can see a similar phenomenon next week, as Earthshine or Ashen Light illuminates the otherwise dark nighttime side of the Earth’s Moon, fresh off of passing New phase this weekend. Snow and cloud cover turned Moonward can have an effect on how bright Earthshine appears. One ongoing study based out of the Big Bear Solar observatory in California named Project Earthshine seeks to characterize long-term climate variations looking at this very phenomenon.

The view on the evening of January 28th looking west at dusk. Credit: Stellarium.

Standing on Pluto, you’d see a 3.5 degree wide Charon, 7 times larger than our own Full Moon. Of course, you’d need to be standing in the right hemisphere, as Pluto and Charon are tidally locked, and keep the same face turned towards each other. It would be a dim view, as the Sun shines at -20 magnitude at 30 AU distant, much brighter than a Full Moon, but still over 600 times fainter than sunny Earth. Dim Plutoshine on the nightside of Charon would, however, be easily visible to the naked eye.

A small 6 cm instrument, Ralph images in the visual to near-infrared range. Ralph compliments New Horizons larger LORRI instrument, which has a diameter and very similar optical configuration to an amateur 8-inch Schmidt-Cassegrain telescope.

Charon as seen from Pluto. Credit: Starry Night.

Don’t look for Pluto now; it just passed solar conjunction on the far side of the Sun on January 7th, 2017. Pluto reaches opposition and favorable viewing for 2017 on July 10th, one of the 101 Astronomical Events for 2017 that you’ll find in our free e-book, out from Universe Today.

And for an encore, New Horizons will visit the 45 kilometer in diameter Kuiper Belt Object 2014 MU69 on New Year’s Day 2019. From there, New Horizons will most likely chronicle the environs of the the distant solar system, as it joins Pioneer 10 and 11 and Voyagers 1 and 2 as human built artifacts cast adrift along the galactic plane.

A pretty pair: Pluto and Charon. Credit: NASA/JPL/New Horizons

And to think, it has taken New Horizons about 18 months for all of its flyby data to trickle back to the Earth. Enjoy, as it’ll be a long time before we visit Pluto and friends again.

How to See the Space Station Fly in Front of the Moon

A beautiful ISS transit on June 19 2015 recorded at Biscarrosse, France. Credit: David Duarte

What strange creature is this flitting across the Moon? Several members of the European Space Agency’s Astronomy Center captured these views of the International Space Station near Madrid, Spain on January 14 as it flew or transited in front of the full moon. Credit: Michel Breitfellner, Manuel Castillo, Abel de Burgos and Miguel Perez Ayucar / ESA

One-one thou… That’s how long it takes for the International Space Station, traveling at over 17,000 mph (27,300 kph), to cross the face of the Full Moon. Only about a half second! To see it with your own eyes, you need to know exactly when and where to look. Full Moon is best, since it’s the biggest the moon can appear, but anything from a half-moon up and up will do.

The photo above was made by superimposing 13 separate images of the ISS passing in front of the Moon into one. Once the team knew when the pass would happen, they used a digital camera to fire a burst of exposures, capturing multiple moments of the silhouetted spacecraft.


The ISS transits the Full Moon in May 2016

The ISS is the largest structure in orbit, spanning the size of a football field, but at 250 miles (400 km) altitude, it only appears as big as a modest lunar crater. While taking a photo sequence demands careful planning, seeing a pass is bit easier. As you’d suspect, the chances of the space station lining up exactly with a small target like the Moon from any particular location is small. But the ISS Transit Finder makes the job simple.

This is a screen grab from the homepage of Bartosz Wojczy?ski’s most useful ISS Transit Finder. Credit: Bartosz Wojczy?ski

Click on the link and fill in your local latitude, longitude and altitude or select from the Google maps link shown. You can always find your precise latitude and longitude at NASA’s Latitude/Longitude Finder  and altitude at Google Maps Find Altitude. Next, set the time span of your Moon transit search (up to one month from the current date) and then how far you’re willing to drive to see the ISS fly in front of the Moon.

When you click Calculate, you’ll get a list of events with little diagrams showing where the ISS will pass in relation to the Moon and sun (yes, the calculator also does solar disk crossings!) from your location. Notice that most of the passes will be near misses. However, if you click on the Show on Map link, you’ll get a ground track of exactly where you will need to travel to see it squarely cross Moon or Sun. Times shown are your local time, not Universal or UT.

A beautiful ISS transit on June 19 2015 recorded at Biscarrosse, France. The photographer used CalSky, another excellent satellite site, to prepare a week in advance of the event. This composite image was made with a Canon EOS 60D. Notice how bright the space station appears against the moon due to the lower-angled lighting across the lunar landscape at crescent phase compared to full, when the ISS appears in silhouette. Credit: David Duarte

The map also includes Recalculate for this location link. Clicking that will show you a sketch of the ISS’ predicted path across the Moon from the centerline location along with other details. I checked my city, and while there are no lunar transits for the next month, there’s a very nice solar one visible just a few miles from my home on Feb. 8. Remember to use a safe solar filter if you plan on viewing one of these!

The ISS transits the Sun on May 3, 2016. Click for details on how the photo was taken. Credit: Szabolcs Nagy

While you might attempt to see a transit of the ISS in binoculars, your best bet is with a telescope. Nothing fancy required, just about any size will do so long as it magnifies at least 30x to 40x. Timing is crucial. Like an occultation, when the moon hides a background star in an instant, you want to be on time and 100% present.

Make sure you’re set up and focused on the moon or sun (with filter) at least 5 minutes beforehand. Keep your cellphone handy. I’ve found the time displayed at least on my phone to be accurate. One minute before the anticipated transit, glue your eye to the eyepiece, relax and wait for the flyby. Expect something like a bird in silhouette to make a swift dash across the moon’s face. The video above will help you anticipate what to expect.

The next lunar transit nearest my home is an hour and a half away in the small town of Biwabik, Minn. according to the ISS Transit Finder. On Jan. 30 at 8:00:08 p.m local time, the ISS will cross the crescent moon from there. Once you know the time of the prediction and the exact latitude and longitude of the location (all information shown in the info box on the map using the ISS Transit Finder), you can turn on the satellites feature in the free Stellarium program (stellarium.org), select the ISS and create a simulated, detailed path. Created with Stellarium

Even if you never go to the trouble of identifying a “direct hit”, you can still use the transit finder to compile a list of cool lunar close approaches that would make for great photos with just a camera and tripod.

The Transit Finder isn’t the only way to predict ISS flybys. Some observers also use the excellent satellite site, CalSky. Once you tell it your location, select the Lunar/Solar Disk Crossings and Occultations link for lots of information including times, diagrams of crossings, ground tracks and more.

I use Stellarium (above) to make nifty simulated paths and show me where the Moon will be in the sky at the time of the transit. When you’ve downloaded the free program, get the latest satellite orbital elements this way:

* Move you cursor to the lower left of the window and select the Configuration box
* Click the Plugins tab and scroll down to Satellites and click Configure and then Update
Hover the cursor at the bottom of the screen for a visual menu. Slide over to the satellite icon and click it once for Satellite hints. The ISS will now be active.
* Set the clock and location (lower left again) for the precise time and location, then do a search for the Moon, and you’ll see the ISS path.

There you have it — lots of options. Or you can simply use the Transit Finder and call it a day! I hope you’ll soon be in the right place at the right time to see the space station pass in front of the Moon. Checking my usual haunts, I see that the space station will be returning next weekend (Jan. 27) to begin an approximately 3-week run of easily viewable evening passes.