Juno Mission Archives

April 1, 2015December 23, 2015 by Ken Kremer

OSIRIS-REx Asteroid Sampler Enters Final Assembly

Artist concept of OSIRIS-REx, the first U.S. mission to return samples from an asteroid to Earth. Credit: NASA/Goddard

OSIRIS-Rex, NASA’s first ever spacecraft designed to collect and retrieve pristine samples of an asteroid for return to Earth has entered its final assembly phase.

Approximately 17 months from now, OSIRIS-REx is slated to launch in the fall of 2016 and visit asteroid Bennu, a carbon-rich asteroid.

Bennu is a near-Earth asteroid and was selected for the sample return mission because it “could hold clues to the origin of the solar system and host organic molecules that may have seeded life on Earth,” says NASA.

The spacecraft is equipped with a suite of five science instruments to remotely study the 492 meter meter wide asteroid.

Eventually it will gather rocks and soil and bring at least a 60-gram (2.1-ounce) sample back to Earth in 2023 for study by researchers here with all the most sophisticated science instruments available.

The precious sample would land arrive at Utah’s Test and Training Range in a sample return canister similar to the one for the Stardust spacecraft.

The OSIRIS-REx – which stands for Origins, Spectral Interpretation, Resource Identification, Security, Regolith Explorer – spacecraft passed a critical decision milestone on the road to launch and has been officially authorized by NASA to transition into this next mission phase.

The decision meeting to give the go ahead for final assembly was held at NASA Headquarters in Washington on March 30 and was chaired by NASA’s Science Mission Directorate, led by former astronaut John Grunsfeld who was the lead spacewalker on the final shuttle servicing mission to the Hubble Space Telescope in 2009.

“This is an exciting time for the OSIRIS-REx team,” said Dante Lauretta, principal investigator for OSIRIS-Rex at the University of Arizona, Tucson, in a stetement.

“After almost four years of intense design efforts, we are now proceeding with the start of flight system assembly. I am grateful for the hard work and team effort required to get us to this point.”

In a clean room facility near Denver, Lockheed Martin technicians began assembling a NASA spacecraft that will collect samples of an asteroid for scientific study. Working toward a September 2016 launch, the OSIRIS-REx spacecraft will be the first U.S. mission to return samples from an asteroid back to Earth. Credit: Lockheed Martin

The transition to the next phase known as ATLO (assembly, test and launch operations) is critical for the program because it is when the spacecraft physically comes together, says Lockheed Martin, prime contractor for OSIRIS-REx. Lockheed is building OSIRIS-Rex in their Denver assembly facility.

“ATLO is a turning point in the progress of our mission. After almost four years of intense design efforts, we are now starting flight system assembly and integration of the science instruments,” noted Lauretta.

Over the next six months, technicians will install on the spacecraft structure its many subsystems, including avionics, power, telecomm, mechanisms, thermal systems, and guidance, navigation and control, according to NASA.

“Building a spacecraft that will bring back samples from an asteroid is a unique opportunity,” said Rich Kuhns, OSIRIS-REx program manager at Lockheed Martin Space Systems, in a statement.

“We can feel the momentum to launch building. We’re installing the electronics in the next few weeks and shortly after we’ll power-on the spacecraft for the first time.”

OSIRIS-REx is scheduled for launch in September 2016 from Cape Canaveral Air Force Station in Florida aboard a United Launch Alliance Atlas V 411 rocket, which includes a 4-meter diameter payload fairing and one solid rocket motor. Only three Atlas V’s have been launched in this configuration.

“In just over 500 days, we will begin our seven-year journey to Bennu and back. This is an exciting time,” said Lauretta.

The spacecraft will reach Bennu in 2018 and return a sample to Earth in 2023.

Bennu is an unchanged remnant from the collapse of the solar nebula and birth of our solar system some 4.5 billion years ago, little altered over time.

The Atlas V with MMS launches, as seen by this camera placed in the front of the launchpad. Copyright © Alex Polimeni — OSIRIS-REx will launch in 2016 on an Atlas V similar to this one lofting NASA’s MMS satellites on March 12, 2015, as seen by this camera placed in the front of the launchpad. Copyright © Alex Polimeni

Significant progress in spacecraft assembly has already been accomplished at Lockheed’s Denver manufacturing facility.

“The spacecraft structure has been integrated with the propellant tank and propulsion system and is ready to begin system integration in the Lockheed Martin highbay,” said Mike Donnelly, OSIRIS-REx project manager at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, in a statement.

“The payload suite of cameras and sensors is well into its environmental test phase and will be delivered later this summer/fall.”

OSIRIS-REx is the third mission in NASA’s New Frontiers Program, following New Horizons to Pluto and Juno to Jupiter, which also launched on Atlas V rockets.

The most recent Atlas V launched NASA’s MMS quartet of Earth orbiting science probes on March 12, 2015.

OSIRIS-REx logo

NASA’s Goddard Space Flight Center in Greenbelt, Maryland, is responsible for overall mission management.

OSIRIS-REx complements NASA’s Asteroid Initiative – including the Asteroid Redirect Mission (ARM) which is a robotic spacecraft mission aimed at capturing a surface boulder from a different near-Earth asteroid and moving it into a stable lunar orbit for eventual up close sample collection by astronauts launched in NASA’s new Orion spacecraft. Orion will launch atop NASA’s new SLS heavy lift booster concurrently under development.

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

Ken Kremer

Artist's concept of the OSIRIS-REx spacecraft collecting a sample from asteroid 1999 RQ36. Credit: NASA — Artist’s concept of the OSIRIS-REx spacecraft collecting a sample from asteroid 1999 RQ36. Credit: NASA

Juno soars skyward to Jupiter on Aug. 5, 2011 from launch pad 41 at Cape Canaveral Air Force Station at 12:25 p.m. EDT. View from the VAB roof. Credit: Ken Kremer/kenkremer.com — OSIRIS-REx is the 3rd mission in NASA’s New Frontiers program. It follows NASA’s Juno orbiter seen here soaring skyward to Jupiter on Aug. 5, 2011 from launch pad 41 at Cape Canaveral Air Force Station at 12:25 p.m. EDT. View from the VAB roof. Credit: Ken Kremer/kenkremer.com

December 10, 2014December 23, 2015 by Elizabeth Howell

Swirly Southern Picture Of Jupiter Makes Us Want To Visit Right Now

A view the Cassini spacecraft took during its flyby of Jupiter's southern pole in 2000. Credit: NASA/JPL/Space Science Institute

Gimme a rocketship – we want to see what those bands are made of! This is a strange view of Jupiter, a familiar gas giant that humanity has sent several spacecraft to. This particular view, taken in 2000 and highlighted on the European Space Agency website recently, shows the southern hemisphere of the mighty planet.

The underneath glimpse came from the Cassini spacecraft while it was en route to Saturn. Lucky for researchers, at the time the Galileo Jupiter spacecraft was still in operation. But now that machine is long gone, leaving us to pine for a mission to Jupiter until another spacecraft gets there in 2016.

That spacecraft is called Juno and is a NASA spacecraft the agency sent aloft in August 2011. And here’s the cool thing; once it gets there, Juno is supposed to give us some insights into how the Solar System formed by looking at this particular planet.

Juno will repeatedly dive between the planet and its intense belts of charged particle radiation, coming only 5,000 kilometers (about 3,000 miles) from the cloud tops at closest approach. (NASA/JPL-Caltech)

“Underneath its dense cloud cover, Jupiter safeguards secrets to the fundamental processes and conditions that governed our Solar System during its formation. As our primary example of a giant planet, Jupiter can also provide critical knowledge for understanding the planetary systems being discovered around other stars,” NASA wrote on the spacecraft’s web page.

The spacecraft is supposed to look at the amount of water in Jupiter’s atmosphere (an ingredient of planet formation), its magnetic and gravitational fields and also its magnetic environment — including auroras.

Much further in the future (if the spacecraft development is approved all the way) will be a European mission called JUICE, for Jupiter Icy Moon Explorer.

Artist's impression of the Jupiter Icy Moons Explorer (JUICE) near Jupiter and one of its moons, Europa. Credit: ESA/AOES — Artist’s impression of the Jupiter Icy Moons Explorer (JUICE) near Jupiter and one of its moons, Europa. Credit: ESA/AOES

The mission will check out the planet and three huge moons, Ganymede, Callisto and Europa, to get a better look at those surfaces. It is strongly believed that these moons could have global oceans that may be suitable for life.

Earlier this month, the European Space Agency approved the implementation phase for JUICE, which means that designers now have approval to come up with plans for the spacecraft. But it’s not going to launch until 2022 and get to Jupiter until 2030, if the schedule holds.

Meanwhile, observations of Jupiter do continue from the ground. One huge finding this year came from the Hubble Space Telescope, which confirmed observations that the Great Red Spot is shrinking for reasons that are yet unknown.

March 19, 2014December 23, 2015 by Jason Major

Twin NASA Probes Find “Zebra Stripes” in Earth’s Radiation Belt

Illustration of the twin Van Allen Probes (formerly Radiation Belt Storm Probes) in orbit (JHUAPL/NASA)

Earth’s inner radiation belt displays a curiously zebra-esque striped pattern, according to the latest findings from NASA’s twin Van Allen Probes. What’s more, the cause of the striping seems to be the rotation of the Earth itself — something that was previously thought to be impossible.

“…it is truly humbling, as a theoretician, to see how quickly new data can change our understanding of physical properties.”

– Aleksandr Ukhorskiy, Johns Hopkins University Applied Physics Laboratory

Our planet is surrounded by two large doughnut-shaped regions of radiation called the Van Allen belts, after astrophysicist James Van Allen who discovered their presence in 1958. (Van Allen died at the age of 91 in 2006.) The inner Van Allen belt, extending from about 800 to 13,000 km (500 to 8,000 miles) above the Earth, contains high-energy electrons and protons and poses a risk to both spacecraft and humans, should either happen to spend any substantial amount of time inside it.

The Radiation Belt Storm Probes Ion Composition Experiment (RBSPICE) is a time-of-flight versus energy spectrometer (JHUAPL)

Launched aboard an Atlas V rocket from Cape Canaveral AFS on the morning of Aug. 30, 2012, the Van Allen Probes (originally the Radiation Belt Storm Probes) are on a two-year mission to investigate the belts and find out how they behave and evolve over time.

One of the instruments aboard the twin probes, the Radiation Belt Storm Probes Ion Composition Experiment (RBSPICE), has detected a persistent striped pattern in the particles within the inner belt. While it was once thought that any structures within the belts were the result of solar activity, thanks to RBSPICE it’s now been determined that Earth’s rotation and tilted magnetic axis are the cause.

“It is because of the unprecedented high energy and temporal resolution of our energetic particle experiment, RBSPICE, that we now understand that the inner belt electrons are, in fact, always organized in zebra patterns,” said Aleksandr Ukhorskiy of the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Md., co-investigator on RBSPICE and lead author of the paper. “Furthermore, our modeling clearly identifies Earth’s rotation as the mechanism creating these patterns. It is truly humbling, as a theoretician, to see how quickly new data can change our understanding of physical properties.”

The model of the formation of the striped patterns is likened to the pulling of taffy.

RBSPICE data of stripes within the inner Van Allen belt (Click for animation) Credit: A. Ukhorskiy/JHUAPL

“If the inner belt electron populations are viewed as a viscous fluid,” Ukhorskiy said, “these global oscillations slowly stretch and fold that fluid, much like taffy is stretched and folded in a candy store machine.”

“This finding tells us something new and important about how the universe operates,” said Barry Mauk, a project scientist at APL and co-author of the paper. “The new results reveal a new large-scale physical mechanism that can be important for planetary radiation belts throughout the solar system. An instrument similar to RBSPICE is now on its way to Jupiter on NASA’s Juno mission, and we will be looking for the existence of zebra stripe-like patterns in Jupiter’s radiation belts.”

Jupiter’s Van Allen belts are similar to Earth’s except much larger; Jupiter’s magnetic field is ten times stronger than Earth’s and the radiation in its belts is a million times more powerful (source). Juno will arrive at Jupiter in July 2016 and spend about a year in orbit, investigating its atmosphere, interior, and magnetosphere.

Thanks to the Van Allen Probes. Juno now has one more feature to look for in Jupiter’s radiation belts.

“It is amazing how Earth’s space environment, including the radiation belts, continue to surprise us even after we have studied them for over 50 years. Our understanding of the complex structures of the belts, and the processes behind the belts’ behaviors, continues to grow, all of which contribute to the eventual goal of providing accurate space weather modeling.”

– Louis Lanzerotti, physics professor at the New Jersey Institute of Technology and principal investigator for RBSPICE

The team’s findings have been published in the March 20 issue of the journal Nature.

The Van Allen Probes are the second mission in NASA’s Living With a Star program, managed by NASA’s Goddard Space Flight Center in Greenbelt, MD. The program explores aspects of the connected sun-Earth system that directly affect life and society.

Source: Van Allen Probes news release

February 6, 2014December 23, 2015 by David Dickinson

A History of Curious Artifacts Sent Into Space

A penny for Mars... Credit: NASA/JPL-Caltech.

Since the dawn of the Space Age in 1957, thousands of artifacts and memorabilia have been flown into space. Some have been hoisted on brief suborbital flights, while others have been flung out of the solar system, never to return. And of course, it’s become a fashionable — and highly commercialized — trend as of late to briefly loft products, stuffed animals, etc via balloon towards the tenuous boundary of space. Fly a souvenir or artifact into orbit, and it goes from mundane to priceless. But a few may also serve as a final testament to the our ephemeral existence as a species long after our passing.

Here’s a look at some of the most memorable objects sent into space:

The Florida State Quarter dispatched with New Horizons. Image Credit: NASA/Bill Rodgers, JHU/APL.

New Horizons Memorabilia

Launched on January 19th, 2006, New Horizons is headed towards a historic encounter with Pluto and its moons next year. From there, New Horizons will survey any Kuiper Belt objects of opportunity along its path and then head out of the solar system, becoming the fifth spacecraft to do so. In addition to a suite of scientific instruments, New Horizons also carries the ashes of Pluto discoverer Clyde Tombaugh, a Florida & Maryland state quarter, a piece of Scaled Composites SpaceShipOne, and an American flag. These will doubtless confuse any extraterrestrial salvagers!

The Humanoids Where Here: the plaque affixed the the Pioneer 10 & 11 spacecraft. Credit: NASA/JPL.

The Pioneer Plaques

The first spacecraft sent on escape trajectories out of our solar system, the Pioneer 10 and 11 spacecraft each carry a plaque which serves as a sort of postcard “greeting” to any future interceptors. The plaque depicts a diagram of the solar system, a map of our location in the galaxy using the positions of known pulsars, and a nude man & woman, which actually generated lots of controversy. Scientist James Van Allen tells of deliberately placing a fingerprint on the Pioneer 10 plaque in his biography The First Eight Billion Miles.

Earth's Greatest Hits: the Golden Record attached to the Voyager 1 and 2 spacecraft. Credit: NASA/JPL. — Earth’s Greatest Hits: the Golden Record attached to the Voyager 1 and 2 spacecraft. Credit: NASA/JPL.

The Voyager 1 and 2 Golden Records

Conceived and designed in part by Carl Sagan, these records contain images and sounds of the Earth that’ll most likely outlive humanity. The records carry greetings in 55 languages, music ranging from Mozart to Chuck Berry, 116 images and more, along with instructions and a stylus for playback. The record is also enclosed in an aluminum cover electroplated with Uranium-238, which an alien civilization could use to date its manufacture via half-life decay.

A closeup of the "Mars Penny." Credit: NASA/JPL-Caltech. — A closeup of the “Mars Penny.” Credit: NASA/JPL-Caltech.

The Mars Curiosity Penny

Strange but true: The Mars rover Curiosity carries a 1909 U.S. Penny for a backup camera calibration target. The penny itself is embedded just below the primary color calibration targets used by Curiosity’s MArs Hand Lens Imager (MAHLI). Rare enough on Earth, the 1909 Lincoln “Mars penny” will be priceless to future collectors!

Jupiter-bound figurines from left: Jupiter, Juno, & Galileo. Credit: NASA.

Juno’s LEGO Figurines

Mini-figurines of Galileo and the Roman deities Jupiter and Juno were launched in 2011 aboard NASA’s Juno spacecraft en route to Jupiter . LEGO has flown products aboard the U.S. Space Shuttles and to the International Space Station previously, but Juno’s cargo represents the “most distant LEGO launch” ever. The figurines will burn up in Jupiter’s atmosphere along with the spacecraft at the end of the mission in October 2017.

An Apollo 15 postal cover flown to the Moon. Credit: NASA.

Apollo 15 Postal Covers Fiasco

Apollo 15 astronauts got in some hot water over a publicity scheme. The idea that stamp collector and dealer Hermann Sieger approached the astronauts with was simple: 400 commemorative postage stamp covers would be postmarked at point of departure from the Kennedy Space Center and again at the return point of arrival aboard the USS Okinawa after their circuitous journey via the Moon. NASA was less than happy with the whole affair, and Command Module Pilot Al Worden recounts the aftermath in his book, Falling to Earth.

A Marsbound DVD... Courtesy of Lockheed Martin/LSP. — A Marsbound DVD… Courtesy of Lockheed Martin/LSP.

Haiku for MAVEN

Last year’s MAVEN mission to Mars also carried haiku submitted by space fans. Over 12,530 valid entries were submitted and over 1,100 haiku received the necessary minimum of two votes to be included on a DVD disk affixed to the spacecraft. MAVEN reaches orbit around Mars in October 2014.

The copy of the Soviet pennant aboard Luna 2on display at the Kansas Cosmoshpere. Credit: Patrick Pelletier under a Wikimedia Creative Commons Attribution-Share Alike 3.0 Unported license. — The copy of the Soviet pennant aboard Luna 2 on display at the Kansas Cosmoshpere. Credit: Patrick Pelletier under a Wikimedia Creative Commons Attribution-Share Alike 3.0 Unported license.

Luna 2: A Russian Pennant on Moon

On September 12^th, 1959, the Soviet Union’s Luna 2 spacecraft became the first man-made object to impact the Moon. Luna 2 carried two spherical “pennants” composed of pentagon-shaped elements engraved with the USSR Coat of Arms and Cyrillic letters translating into “CCCP/USSR September 1959.” An identical pennant is now on display in the Kansas Cosmosphere.

EchoStar XVI in its clean room. Credit: Space Systems Loral.

A GeoSat Time Capsule Aboard EchoStar XVI

A disk entitled Last Pictures similar to the Voyager records was placed on a satellite headed to geosynchronous orbit in 2012. Launched aboard EchoStar XVI, Last Pictures is an ultra-archival disk containing 100 snapshots of modern life along with interviews with several 21^st century artists and scientists. Geosynchronous satellites aren’t subject to atmospheric drag, and may be the last testament to the existence of humanity on Earth millions of years hence.

An artist's conception of NASA's Lunar Prospector mission leaving Earth orbit. Credit: NASA. — An artist’s conception of NASA’s Lunar Prospector mission leaving Earth orbit. Credit: NASA.

Lunar Prospector Carries An Astro-Geologist’s Ashes to the Moon

Though he never made the selection to become an astronaut, scientist Eugene Shoemaker did make a posthumous trip to the Moon. The Lunar Prospector spacecraft departed Earth with Shoemaker’s ashes on January 7th, 1998 in a capsule wrapped in brass foil. Lunar Prospector impacted the south pole of the Moon on July 31^st, 1999.

The SpaceX Dragon capsule on approach to the ISS during the COTS 2 mission. Credit: NASA.

SpaceX Takes Star Trek Actor to Space

The ashes actor James Doohan (AKA Scotty) were launched aboard a 2012 SpaceX flight to the International Space Station. The COTS Demo Flight, or COTS 2, was the first commercial spacecraft to berth at the ISS. SpaceX had flown a small amount of Doohan’s ashes on the 2008 unsuccessful test launch of the Falcon 1 rocket.

The "Top Secret Payload" of Credit: Chris Thompson/SpaceX. — The “Top Secret Payload” of the Dragon capsule revealed. Credit: Chris Thompson/SpaceX.

Cheese Wheel Makes a Suborbital Journey

All eyes were also on SpaceX during their December 8^th 2010 maiden flight of the Dragon space capsule. And the hinted mystery cargo? None other than a wheel of cheese, a nod by SpaceX CEO Elon Musk to a classic Monty Python sketch.

The Apollo 12 “Moon Museum”

Did it really go into space? One of the legends surrounding the Apollo program is the existence of what’s been dubbed the “Moon Museum.” This was a postage stamp-sized “gallery” of art which included a sketch by Andy Warhol and other 1960s artists that was supposedly attached to descent stage of Apollo 12 and left on the Moon. It will be up to future lunar visitors to confirm or deny its existence!

…And lastly, I give you the “Space Hubcap”

Was the first man-made object propelled into space actually a 1 ton armor plate? On August 27^th, 1957 — just two months prior to Sputnik 1 — the Pascal-B underground nuclear test was conducted in southern Nevada. During the explosion, a steel plate cap was blasted off of a test shaft. The plate could be seen in the initial high-speed video frames, and it was estimated to have reached a speed six times the sufficient escape velocity to depart Earth. To this day, no one knows if this strange artifact of early Space Age folklore still roams the void of space, or simply vaporized due to atmospheric compression at “launch”.

January 23, 2014December 23, 2015 by David Dickinson

Watch: An Amazing, Mesmerizing Full Rotation of Jupiter

Jupiter as imaged by Michael Phillips on July 25th, 2009... note the impact scar discovered by Anthony Wesley to the lower left. — Jupiter as imaged by Michael Phillips on July 25th, 2009.

Jupiter is a happening place in the solar system. While bashful Mars only puts on a good show once every two year opposition period, and inner worlds such as Mercury and Venus yield no surface details to backyard observers at all, the cloud tops of Jupiter display a wealth of changing detail in even modest backyard telescopes.

And this month is a great time to start observing Jupiter, as the largest planet in our solar system just passed opposition on January 5^th. Recently, veteran astrophotographer Michael Phillips amazed us here at Universe Today once again with a stunning time-lapse sequence of Jupiter and its moons Ganymede and Io. Now, he’s outdone himself with a new full rotation compilation of the gas giant planet.

The capture is simply mesmerizing to sit and watch. At 9.9 hours, Jupiter has the fastest rotational period of any planet in our solar system. In fact, with Jupiter currently visible low to the east at sunset, it’s possible to follow it through one rotation in the span of a single long January winter night.

We caught up with Michael recently and asked him about this amazing capture. The sequence was actually accomplished over the span of five successive evenings. This made it challenging to stitch together using a sophisticated program known as WINJupos.

“While this is possible on a long winter night when it is darker longer, I typically find it easier to do over multiple nights than one long sleepless night,” Michael told Universe Today. “If you wait too many days between observations, the features will change significantly, and then two nights will not match up clearly. The seams that result from using multiple nights are tricky to stick together. I created multiple non-overlapping seams and tried to blend them out against one another as layers in my image editing software. The result is smoother, but not quite the same as a single observation.”

A 14” f/4.5 Newtonian reflecting telescope was used for the captures. “Similar weather conditions and camera settings help quite a bit to make the multiple nights’ segments match up better,” Michael noted. “Keeping the same settings, using the same location away from my house in the corner of the yard (to reduce local atmospheric turbulence) night after night gives consistent results after removing the variability of the weather.”

Planetary photography also requires special considerations prior to imaging, such as getting Jupiter high enough in the sky and at specific longitudes to get full coverage in the rotation sequence.

“I try to consider the local weather patterns and atmospheric stability (seeing), but in reality, I pushed myself to get out as much and often as I could,” Michael told Universe Today. “Typically, I try to wait until Jupiter is at the highest in the sky, as the result is looking through less atmosphere and thus more stable conditions. Sometimes, the planets jiggle around and you just want to scream ‘SIT STILL!’ Basically around the time of opposition I go out as often as it’s clear, as those are opportunities that you don’t get back again until next year.”

Jupiter reaches opposition just over once every 13 months, moving roughly one constellation eastward each time. 2013 was an “oppositionless” year for Jupiter, which won’t occur again until 2025. Michael also notes that from his observing location at 35 degrees north latitude, Jupiter currently peaks at an altitude of 77 degrees above the horizon when it transits the local meridian. “I wasn’t going to squander it waiting for perfect conditions!”

In fact, Jupiter is currently in a region in the astronomical constellation of Gemini that will be occupied by the Sun in just over five months time during the June Solstice. Currently at a declination of around 22 degrees 45’ north, Jupiter won’t appear this high in the northern sky near opposition again until 2026.

It’s also amazing to consider the kind of results that backyard observers like Michael Phillips are now routinely accomplishing. It’s an interesting exercise to compare Michael’s capture side-by-side with a sequence captured by NASA’s New Horizons spacecraft during its 2006 flyby of Jupiter:

Both sequences capture a wealth of detail, including the enormous Great Red Spot, the Northern and Southern Equatorial Belts, and numerous white spots and smaller swirls and eddies in the Jovian atmosphere.

To date, six spacecraft (Pioneer 10 and 11, Voyagers 1 and 2, New Horizons and Cassini) have made flybys of Jupiter, and one, Galileo, orbited the planet until its demise in 2003. Juno is the next in this legacy, and will be inserted into orbit around Jupiter in July 2016.

Now is the time to get out and observe and image Jupiter and its moons, as it moves higher into the sky on successive evenings towards eastern quadrature on April 1st, 2014.

Congrats to Michael Phillips on an amazing sequence!

December 10, 2013December 23, 2015 by Nancy Atkinson

Stunning Movie Shows What Earth Looks Like to an Incoming Spacecraft

A mosaic of images of the Earth and Moon taken by the incoming Juno spacecraft as it flew past Earth in October 2013. Credit: NASA/JPL

When NASA’s Juno spacecraft flew past Earth in October of this year, it focused some of its cameras on the Earth-Moon system. Immediately after the flyby, images taken by the Junocam were released, but today, NASA released an amazing video taken by the Advanced Stellar Compass (ASC) camera, a low-light camera that is primarily used as a star tracking a navigation tool. Over the course of three days, it captured the orbital ballet-like dance between the Earth and Moon.

“This is profound, and I think our movie does the same thing as “Pale Blue Dot” image from Voyager, except it’s a movie instead of an image,” said Scott Bolton, Juno principal investigator, speaking during a press briefing from the American Geophysical Union conference today in San Fransisco. “Like Carl Sagan said, everything we know is on this dot. To me this says, ‘we’re all in this together.’”

The Oct. 9 flyby was a gravity assist, accelerating Juno out of the inner solar system and toward Jupiter’s orbit. The probe is expected to arrive at Jupiter on July 4, 2016.

The movie begins at 2:00 UTC on Oct. 6, more than four days before Juno’s closest approach, when the spacecraft was approximately 2.1 million miles (3.3 million kilometers) from Earth. Earth’s moon is seen transiting in front of our planet, and then moves out of frame toward the right as Juno enters the space inside the orbit of our natural satellite. As Juno gets closer to Earth, hints of clouds and continents are visible before the planet’s brightness overwhelms the cameras, which were not designed to image so bright an object. The sequence ends as Earth passes out of view, which corresponds to approximately 17:35 UTC Oct. 9 when Juno was at an altitude of about 47,000 miles (76,000 kilometers) above Earth’s surface.

“From a half-million kilometers out, the Moon is dark as charcoal and but Earth way brighter, as a shiny blue dot,” said John Joergensen, who lead the team that designed the star tracking cameras. “It’s amazing to think that all of humanity being scanned in this movie, and to see how small the Moon is relative to Earth.”

The cameras that took the images for the movie are located near the pointed tip of one of the spacecraft’s three solar-array arms. They are part of Juno’s Magnetic Field Investigation (MAG) and are normally used to determine the orientation of the magnetic sensors. These cameras look away from the sunlit side of the solar array, so as the spacecraft approached, the system’s four cameras pointed toward Earth. Earth and the moon came into view when Juno was about 600,000 miles (966,000 kilometers) away — about three times the Earth-moon separation.

During the flyby, timing was everything. Juno was traveling about twice as fast as a typical satellite, and the spacecraft itself was spinning at 2 rpm. To assemble a movie that wouldn’t make viewers dizzy, the star tracker had to capture a frame each time the camera was facing Earth at exactly the right instant. The frames were sent to Earth, where they were processed into video format.

As Juno is a spinning spacecraft, the images were aligned to remove their apparent rotation. The original ASC images are monochrome; faint coloration has been added by converting the measured grayscale values into false colors matching a true color image of Earth.

JPL press release

December 10, 2013December 23, 2015 by Nancy Atkinson

How People from Earth said “Hi” to a Passing Spacecraft

This colorized composite shows more than half of Earth’s disk over the coast of Argentina and the South Atlantic Ocean as the Juno probe slingshotted by on Oct. 9, 2013 for a gravity assisted acceleration to Jupiter. The mosaic was assembled from raw images taken by the Junocam imager. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo

Um, something in my eye. This wonderful video details a what took place when the Jupiter-bound Juno spacecraft swung past Earth on Oct. 9, 2013 for a gravity assist, and amateur radio operators around the world sent a Morse Code saying “HI” to the spacecraft.

“We wanted to know, if this were an interplanetary spacecraft, could they we tell there was intelligent life on Earth?” said Bill Kurth, co-investigator for the Juno Waves Investigation from the University of Iowa.

Watch the video to find out if it worked.

“We obviously haven’t heard anything like this from any other planet,” said Scott Bolton, Juno principal investigator, speaking during a press briefing from the American Geophysical Union conference today in San Fransisco.

November 21, 2013December 23, 2015 by David Dickinson

NASA Halts Work on its New Nuclear Generator for Deep Space Exploration

MSL's MMRTG in the laboratory. (Credit: NASA).

Another blow was dealt to deep space exploration this past weekend. The announcement comes from Jim Green, NASA’s Planetary Science Division Director. The statement outlines some key changes in NASA’s radioisotope program, and will have implications for the future exploration of the outer solar system.

An Advanced Stirling Converter prototype in the laboratory. (Credit: NASA).

We’ve written about the impending plutonium shortage and what it means for the future of spaceflight, as well as the recent restart of plutonium production. NASA is the only space agency that has conducted missions to the outer planets — even the European Space Agency’s Huygens lander had to hitch a ride with Cassini to get to Titan — and plutonium made this exploration possible. Continue reading “NASA Halts Work on its New Nuclear Generator for Deep Space Exploration”

October 26, 2013December 23, 2015 by Ken Kremer

Jupiter Bound Juno snaps Dazzling Gallery of Planet Earth Portraits

Juno Portrait of Earth
This false color composite shows more than half of Earth’s disk over the coast of Argentina and the South Atlantic Ocean as the Juno probe slingshotted by on Oct. 9, 2013 for a gravity assisted acceleration to Jupiter. The mosaic was assembled from raw images taken by the Junocam imager. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo
See below a gallery of Earth from Juno[/caption]

During a crucial speed boosting slingshot maneuver around Earth on Oct. 9, NASA’s Jupiter-bound Juno probe snapped a dazzling gallery of portraits of our Home Planet over the South American coastline and the Atlantic Ocean. See our mosaics of land, sea and swirling clouds above and below, including several shown in false color.

But an unexpected glitch during the do or die swing-by sent the spacecraft into ‘safe mode’ and delayed the transmission of most of the raw imagery and other science observations while mission controllers worked hastily to analyze the problem and successfully restore Juno to full operation on Oct. 12 – but only temporarily!

Because less than 48 hours later, Juno tripped back into safe mode for a second time. Five days later engineers finally recouped Juno and it’s been smooth sailing ever since, the top scientist told Universe Today.

“Juno is now fully operational and on its way to Jupiter,” Juno principal investigator Scott Bolton told me today. Bolton is from the Southwest Research Institute (SwRI), San Antonio, Texas.

“We are completely out of safe mode!”

NASA's Juno probe captured the image data for this composite picture during its Earth flyby on Oct. 9 over Argentina, South America and the southern Atlantic Ocean. Raw imagery was reconstructed and aligned by Ken Kremer and Marco Di Lorenzo, and false-color blue has been added to the view taken by a near-infrared filter that is typically used to detect methane. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo — NASA’s Juno probe captured the image data for this composite picture during its Earth flyby on Oct. 9 over Argentina, South America and the southern Atlantic Ocean. Raw imagery was reconstructed and aligned by Ken Kremer and Marco Di Lorenzo, and false-color blue has been added to the view taken by a near-infrared filter that is typically used to detect methane. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo

With the $1.1 Billion Juno probe completely healthy once again and the nail-biting drama past at last, engineers found the time to send the stored photos and research data back to ground station receivers.

“The science team is busy analyzing data from the Earth flyby,” Bolton informed me.

The amateur image processing team of Ken Kremer and Marco Di Lorenzo has stitched together several portraits from raw images captured as Juno sped over Argentina, South America and the South Atlantic Ocean and within 347 miles (560 kilometers) of the surface. We’ve collected the gallery here for all to enjoy.

Several portraits showing the swirling clouds and land masses of the Earth’s globe have already been kindly featured this week by Alan Boyle at NBC News and at the Daily Mail online.

Raw images from the Junocam camera are collected in strips – like a push broom. So they have to be carefully reconstructed and realigned to match up. But it can’t be perfect because the spacecraft is constantly rotating and its speeding past Earth at over 78,000 mph.

So the perspective of Earth’s surface features seen by Junocam is changing during the imaging.

And that’s what is fascinating – to see the sequential view of Earth’s beautiful surface changing as the spacecraft flew over the coast of South America and the South Atlantic towards Africa – from the dayside to the nightside.

This composite shows more than half of Earth’s disk over the coast of Argentina and the South Atlantic Ocean as the Juno probe slingshotted by on Oct. 9, 2013 for a gravity assisted acceleration to Jupiter. The mosaic was assembled from raw images taken by the Junocam imager. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo

It’s rare to get such views since only a few spacecraft have swung by Earth in this manner – for example Galileo and MESSENGER – on their way to distant destinations.

Coincidentally this week, the Cygnus cargo carrier departed the ISS over South America.

Fortunately, the Juno team knew right from the start that the flyby of Earth did accomplish its primary goal of precisely targeting Juno towards Jupiter – to within 2 kilometers of the aim point, despite going into safe mode.

“We are on our way to Jupiter as planned,” Juno Project manager Rick Nybakken, told me in a phone interview soon after the flyby of Earth. Nybakken is from NASA’s Jet Propulsion Lab in Pasadena, CA.

“None of this affected our trajectory or the gravity assist maneuver – which is what the Earth flyby is,” he said.

It also accelerated the ships velocity by 16,330 mph (26,280 km/h) – thereby enabling Juno to be captured into polar orbit about Jupiter on July 4, 2016.

Dayside view of a sliver of Earth snapped by Juno during flyby on Oct. 9, 2013. This mosaic has stitched from raw image data captured by methane near-infrared filter on Junocam imager at 11:57:30 PDT. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo — Dayside view of a sliver of Earth snapped by Juno during flyby on Oct. 9, 2013. This mosaic is stitched from raw image data captured by methane near-infrared filter on Junocam imager at 11:57:30 PDT. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo

The safe mode did not impact the spacecraft’s trajectory one smidgeon!

It was likely initiated by an incorrect setting for a fault protection trigger for the spacecraft’s battery when Juno was briefly in an eclipse during the flyby.

Nybakken also said that the probe was “power positive and we have full command ability,” while it was in safe mode.

Safe mode is a designated fault protective state that is preprogrammed into spacecraft software in case something goes amiss. It also aims the craft sunwards thereby enabling the solar arrays to keep the vehicle powered.

False-color composite of a sliver of Earth snapped by Juno during flyby on Oct. 9, 2013. This mosaic is stitched from raw image data captured by methane near-infrared filter on Junocam imager at 11:57:30 PDT. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo

The Earth flyby maneuver was necessary because the initial Atlas V rocket launch on Aug. 5, 2011 from Cape Canaveral Air Force Station, FL was not powerful enough to place Juno on a direct trajectory flight to Jupiter.

As of today, Juno is more than was 6.7 million miles (10.8 million kilometers) from Earth and 739 million miles (7.95 astronomical units) from Jupiter. It has traveled 1.01 billion miles (1.63 billion kilometers, or 10.9 AU) since launch.

With Juno now on course for our solar system’s largest planet, there won’t be no any new planetary images taken until it arrives at the Jovian system in 2016. Juno will then capture the first ever images of Jupiter’s north and south poles.

We have never seen Jupiter’s poles imaged from the prior space missions, and it’s not possible from Earth.

During a year long mission at Jupiter, Juno will use its nine science instruments to probe deep inside the planet to reveal its origin and evolution.

“Jupiter is the Rosetta Stone of our solar system,” says Bolton. “It is by far the oldest planet, contains more material than all the other planets, asteroids and comets combined and carries deep inside it the story of not only the solar system but of us. Juno is going there as our emissary — to interpret what Jupiter has to say.”

Based on what we’ve seen so far, Junocam is sure to provide spectacular views of the gas giants poles and cloud tops.

Only 982 days to go !

Ken Kremer

October 12, 2013December 23, 2015 by Ken Kremer

Jupiter-bound Juno Probe Back in Full Operation After Earth Flyby Glitch

Juno swoops over Argentina
This reconstructed day side image of Earth is one of the 1st snapshots transmitted back home by NASA’s Jupiter-bound Juno spacecraft during its speed boosting flyby on Oct. 9, 2013. It was taken by the probes Junocam imager and methane filter at 12:06:30 PDT and an exposure time of 3.2 milliseconds. Juno was flying over South America and the southern Atlantic Ocean. The coastline of Argentina is visible at top right. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer
See another cool Junocam image below[/caption]

Engineers have deftly managed to successfully restore NASA’s Jupiter-bound Juno probe back to full operation following an unexpected glitch that placed the ship into ‘safe mode’ during the speed boosting swing-by of Earth on Wednesday, Oct. 9 – the mission’s top scientist told Universe Today late Friday.

“Juno came out of safe mode today!” Juno principal investigator Scott Bolton happily told me Friday evening. Bolton is from the Southwest Research Institute (SwRI), San Antonio, Texas.

The solar powered Juno spacecraft conducted a crucial slingshot maneuver by Earth on Wednesday that accelerated its velocity by 16,330 mph (26,280 km/h) thereby enabling it to be captured into polar orbit about Jupiter on July 4, 2016.

Dayside view of a sliver of Earth snapped by Juno during flyby on Oct. 9, 2013. This mosaic has been reconstructed from raw image data captured by methane infrared filter on Junocam imager at 11:57:30 PDT. Credit: NASA/JPL/SwRI/MSSS/Ken Kremer/Marco Di Lorenzo

“The safe mode did not impact the spacecraft’s trajectory one smidgeon!”

Juno exited safe mode at 5:12 p.m. ET Friday, according to a statement from the Southwest Research Institute. Safe mode is a designated fault protective state that is preprogrammed into spacecraft software in case something goes amiss.

Juno’s flight track above Earth during Oct. 9, 2013 flyby. Credit: NASA/JPL

“The spacecraft is currently operating nominally and all systems are fully functional,” said the SwRI statement.

Although the Earth flyby did accomplish its primary goal of precisely targeting Juno towards Jupiter – within 2 kilometers of the aim point ! – the ship also suffered an unexplained anomaly that placed Juno into ‘safe mode’ at some point during the swoop past Earth.

“After Juno passed the period of Earth flyby closest approach at 12:21 PM PST [3:21 PM EDT] and we established communications 25 minutes later, we were in safe mode,” Juno Project manager Rick Nybakken, told me in a phone interview soon after Wednesday’s flyby of Earth. Nybakken is from NASA’s Jet Propulsion Lab in Pasadena, CA.

Nybakken also said that the probe was “power positive and we have full command ability.”

So the mission operations teams at JPL and prime contractor Lockheed Martin were optimistic about resolving the safe mode issue right from the outset.

“The spacecraft acted as expected during the transition into and while in safe mode,” acording to SwRI.

During the flyby, the science team also planned to observe Earth using most of Juno’s nine science instruments since the slingshot also serves as an important dress rehearsal and key test of the spacecraft’s instruments, systems and flight operations teams.

“The Juno science team is continuing to analyze data acquired by the spacecraft’s science instruments during the flyby. Most data and images were downlinked prior to the safe mode event.”

Juno’s closest approach took place over the ocean just off the tip of South Africa at about 561 kilometers (349 miles).

Juno launched atop an Atlas V rocket two years ago from Cape Canaveral Air Force Station, FL, on Aug. 5, 2011 on a journey to discover the genesis of Jupiter hidden deep inside the planet’s interior.

The $1.1 Billion Juno probe is continuing on its 2.8 Billion kilometer (1.7 Billion mile) outbound trek to the Jovian system.

During a one year long science mission – entailing 33 orbits lasting 11 days each – the probe will plunge to within about 3000 miles of the turbulent cloud tops and collect unprecedented new data that will unveil the hidden inner secrets of Jupiter’s origin and evolution.

Read more about Juno’s flyby in my articles – at NBC News; here, and Universe Today; here, here and here

Ken Kremer