"AstroButch [Butch Wilmore] has set up our Xmas tree in the lab and hung socks for us," tweeted astronaut Samantha Cristoforetti from the International Space Station Dec. 7, 2014. Credit: Samantha Cristoforetti/Twitter
If you think the upside-down Christmas tree above is bizarre — that’s one of the latest activities of Expedition 42 astronauts in space right now — think back to the history of other holidays in orbit.
We’ve seen a vital telescope undergo repairs, an emergency replacement of part of a space station’s cooling system, and even a tree made of food cans. Learn more about these fun holiday times below.
Reading from above the moon (Apollo 8, 1969)
In this famous reading from the Bible, astronauts Frank Borman, Jim Lovell and Bill Anders shared their experience looking at the Moon on Dec. 24, 1968. The Apollo 8 crew was the first to venture to lunar orbit, just seven months before the Apollo 11 crew made it all the way to the surface.
Food can “Christmas tree” (Skylab 4, 1973)
A “Christmas tree” created out of food cans by the Skylab 4 crew in 1973. Credit: NASA
Living on the Skylab station taught astronauts the value of improvisation, such as when the first crew (under NASA’s instructions) repaired a sunshield to stop electronics and people from roasting inside. Skylab 4 took the creativity to Christmas when they created a tree out of food cans.
Hubble Space Telescope repair (STS-103, 1999)
The Hubble Space Telescope during a 1999 repair mission with STS-103 crew members Mike Foale (left, for NASA) and Claude Nicollier (European Space Agency). Credit: NASA
When the Hubble Space Telescope was in hibernation due to a failed gyroscope, the STS-103 crew made repairs in December 1999 that culminated with the final spacewalk on Christmas Day. The telescope remains in great shape to this day, following another repair mission in 2009.
First Christmas on the International Space Station (Expedition 1, 2000)
The Expedition 1 crew with fresh oranges on the International Space Station in December 2000. From left, Yuri Gidzenko (Roscosmos), Bill Shepherd (NASA) and Sergei Krikalev (Roscosmos). Credit: NASA
The Expedition 1 crew was the first on the International Space Station to spend Christmas in orbit. “On this night, we would like to share with all-our good fortune on this space adventure; our wonder and excitement as we gaze on the Earth’s splendor; and our strong sense — that the human spirit to do, to explore, to discover — has no limit,” the crew said in a statement on Christmas Eve, in part.
Ammonia tank replacement (Expedition 38, 2013)
Just last year, an ammonia tank failure crippled a bunch of systems on the International Space Station and forced spacewalkers outside to fix the problem, in the middle of a leaky suit investigation. The astronauts made the final repairs ahead of schedule, on Christmas Eve.
NASA’s New Horizons spacecraft just woke up from its long nap, and now it’s on final approach towards its next destination: Pluto. Over the next few months, Pluto will be getting bigger and bigger in the front window; we’ll finally get our first close-up look at this mysterious icy world on July 14, 2015.
Universe Today publisher Fraser Cain will moderate a discussion with New Horizons Principal Investigator Alan Stern, and other members of the science team: Jason Cook, Alex Parker, Simon Porter, Kelsi Singer, and Amanda Zangari.
We’ll be talking about the status of New Horizons, the science objectives of the mission, and answering questions from viewers.
Artist's conception of a Mars Exploration Rover, which included Opportunity and Spirit. Credit: NASA
The Opportunity Mars rover is busy on its wheels as it moves towards “Marathon Valley”, a location that could include clay minerals — a sign of past water in the region. After successfully passing 41 kilometers (25.47 miles) in total driving a few weeks ago, the rover is closing out its 11th year on Mars with guided and unguided drives towards that destination.
As of late November, the latest status update available from NASA, the rover is just about a half-mile (1 kilometer) from Marathon Valley and busy collecting measurements on an interesting geologic feature en route. This followed several hundred feet of driving that took place just before.
The rover is now racing to finish its work as the Martian winter approaches. Its science activities are still being disrupted by rover difficulties, according to the Planetary Society, which follows weeks of memory problems that have plagued Opportunity through the fall. But Opportunity is still trekking despite these aging issues and transmitting raw imagery from the surface of Mars, which you can see below.
A rough panorama of the Opportunity rover’s surroundings on Mars based on three images taken on Sol 3,861 in December 2014. Credit: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ. Panorama: Elizabeth HowellA shot across the Martian vista taken by the Opportunity rover on Sol 3,862 in December 2014. Credit: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.Tracks from the Opportunity Mars rover on Sol 3,861 in December 2014. Credit: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.Many of Opportunity’s photos from Mars in early December 2014, such as this one on Sol 3,860, focused on details of the terrain beneath. Credit: NASA/JPL-Caltech/Cornell Univ./Arizona State Univ.
NASA’s first Orion spacecraft blasts off at 7:05 a.m. atop United Launch Alliance Delta 4 Heavy Booster at Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station in Florida on Dec. 5, 2014. Launch pad remote camera view. Credit: Ken Kremer - kenkremer.com
KENNEDY SPACE CENTER, FL – NASA’s exploration roadmap aimed at sending Humans to Mars in the 2030s got off the ground magnificently with the flawless launch and landing of the agency’s new Orion deep space capsule on its maiden voyage to space on Friday, Dec. 5, 2014.
“The first look looks really good from a data standpoint and will help us as we go forward,” said Bill Gerstenmaier, NASA’s associate administrator for the Human Exploration and Operations Directorate, at the post Orion landing media briefing at the Kennedy Space Center (KSC).
“We, as a species, are meant to press humanity further into the solar system and this is a first step. What a tremendous team effort.”
Orion roared to orbit atop the fiery fury of a 242 foot tall United Launch Alliance Delta IV Heavy rocket – the world’s most powerful booster – at 7:05 a.m. EST from Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station in Florida.
The unpiloted test flight of Orion on the Exploration Flight Test-1 (EFT-1) mission carried the capsule farther away from Earth than any spacecraft designed for astronauts has traveled in more than four decades.
Humans have not ventured beyond low Earth orbit since the launch of Apollo 17 on NASA’s final moon landing mission on Dec. 7, 1972.
Orion’s inaugural launch on Dec. 5, 2014, atop United Launch Alliance Delta IV Heavy rocket at Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station, Florida at 7:05 a.m. Credit: Alex Polimeni/Zero-G News/AmericaSpace
The first stage of the mammoth, triple barreled Delta IV Heavy generates some two million pounds of liftoff thrust and was the only rocket powerful enough to launch Orion and achieve its intended goals.
During the two orbit, 4.5 hour flight, Orion reached an altitude of 3,604 miles above Earth, about 15 times higher than the International Space Station (ISS).
The Delta rocket’s main stage and upper stage performed so well that Orion was injected into orbit within an accuracy of about 1 foot of the planned orbit, said Larry Price, Lockheed Martin Deputy Orion Program Manager in an interview with Universe Today.
“It’s phenomenal,” Price told me. NASA selected Lockheed Martin a decade ago as the prime contractor to design and build Orion.
A camera in the window of NASA’s Orion spacecraft looks back at Earth during its unpiloted flight test in orbit. Credit: NASA Television
Orion was assembled, integrated, and tested inside the Neil Armstrong Operations & Checkout Facility at KSC.
“Lockheed Martin did a tremendous job of getting Orion ready,” noted Gerstenmaier.
“Thanks to everyone for getting us to be the leader in space.”
The EFT-1 mission concluded with a successful parachute-assisted splashdown of the Orion crew module in the Pacific Ocean, 600 miles southwest of San Diego.
Orion Service Module fairing separation. Credit: NASA TV
“It was a difficult mission,” said Mark Geyer, NASA’s Orion program manager at the KSC briefing. It appears to have been nearly flawless.”
“It is hard to have a better day than today, The upper stage put us right where we needed to be.”
“Today’s flight test of Orion is a huge step for NASA and a really critical part of our work to pioneer deep space on our Journey to Mars,” said NASA Administrator Charles Bolden.
“The teams did a tremendous job putting Orion through its paces in the real environment it will endure as we push the boundary of human exploration in the coming years.”
The spacecraft was loaded with over 1200 sensors to collect critical performance data on numerous systems throughout the mission for evaluation by engineers.
EFT-1 tested the rocket, second stage, and jettison mechanisms, as well as avionics, attitude control, computers, environmental controls, and electronic systems inside the Orion spacecraft and ocean recovery operations.
It also tested the effects of intense radiation by traveling twice through the Van Allen radiation belt.
Approximately 3 hours and 20 minutes into the mission, the spacecraft separated and soon experienced the highest radiation levels of the mission.
At about 4 hours and 15 minutes, the capsule began its high speed re-entry through the atmosphere at speeds approaching 20,000 mph, thereby testing the 16.5-foot-wide heat shield at speeds approximating 85% of the reentry velocity for astronauts returning from voyages to the Red Planet.
The capsule survived scorching temperatures near 4,000 degrees Fahrenheit in a successful test of the heat shield and thermal protection tiles, before splashing down on a trio of parachutes in the Pacific Ocean at 11:29 a.m. EST.
The Orion crew module splashed down in the Pacific Ocean about 600 miles southwest of San Diego. Credit: NASA TV
The purpose was to check out many, but not all, of the systems critical to the safety of astronauts who will eventually travel to deep space in Orion.
“When Orion started there were still a lot of Apollo veterans. Now we have finally done something for our generation,” said Mike Hawes, Lockheed Martin Orion Program manager.
Onboard cameras captured stunning views during many stages of the EFT-1 mission, including the fairing jettison and views out the window.
“Some of those pictures where you could see the frame of the window, you don’t feel like you’re watching like a satellite, you feel like an astronaut yourself,” Geyer said.
In the Kennedy Space Center’s Press Site auditorium, agency leaders received prolonged applause on entering the room and spoke to members of the news media about the successful Orion Flight Test on Dec. 5, 2014. From left are: Bill Gerstenmaier, NASA associate administrator for Human Exploration and Operations; Mark Geyer, Orion program manager; Mike Hawes, Lockheed Martin Orion Program manager; and NASA astronaut Rex Walheim. Credit: Ken Kremer – kenkremer.com
“That picture really meant something to me,” said astronaut Rex Walheim, who flew on the final space shuttle mission on STS-135.
A drone captured stunning images of Orion during the final plummet to Earth and parachute deployment.
The pace of the Orion program is constrained by budgets and is slower than anyone wishes.
The next Orion launch on the EM-1 mission is slated for the second half of 2018 and will also be unmanned during the debut launch of NASA’s powerful new SLS rocket.
America’s astronauts flying aboard Orion will venture farther into deep space than ever before – beyond the Moon to Asteroids, Mars, and other destinations in our Solar System starting around 2020 or 2021 on Orion’s first crewed flight atop NASA’s new monster rocket – the SLS – concurrently under development.
Watch for Ken’s ongoing Orion coverage from onsite at the Kennedy Space Center about the historic launch on Dec. 5.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Artist's conception of the New Horizons spacecraft at Pluto. Credit: Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute (JHUAPL/SwRI)
Pluto, humanity is getting ready to change your image. The New Horizons spacecraft is awake once more after emerging from hibernation as planned yesterday (Dec. 6). And after a decade of sailing through space, there will be a historic first encounter with the dwarf planet in July.
The story may not end there, either. Mission managers are working hard to make the case that since New Horizons is way “out there” anyway, it would be a great idea to put the spacecraft past another object later in the mission. That hope rides heavily on the success of the Pluto encounter July 14.
“Technically, this was routine, since the wake-up was a procedure that we’d done many times before,” said Glen Fountain, New Horizons project manager at the Johns Hopkins Applied Physics Laboratory, in a statement. “Symbolically, however, this is a big deal. It means the start of our pre-encounter operations.”
The New Horizons spacecraft takes off on Jan. 19, 2006 from the Kennedy Space Center for its planned close encounter with Pluto. Credit: NIKON/Scott Andrews/NASA
It’s been a neat few years for the mighty machine, even before getting to the main event. New Horizons launched from the Kennedy Space Center in 2006 and made a close pass by Jupiter and its moons in 2007, doing some science en route — including catching a huge explosion from Io, a volcanic moon.
Since then, the spacecraft has dutifully been sending back pictures from across the Solar System, including a picture of Neptune’s moon Triton, and several of Pluto — the first time a spacecraft will venture that far. In between the science work and checking out systems, New Horizons spent two-thirds of the journey sleeping to conserve energy for the big show.
Up next for the spacecraft will be several weeks of checkouts and also putting together the commands to make sure New Horizons is successfully guided past Pluto and its moons (a process that got complicated over the years as more moons were discovered.) After that, if the spacecraft holds out and the budget is approved, managers want to swing it past a Kuiper Belt Object.
Two potential targets for the New Horizons mission emerge in these Hubble Space Telescope multiple-exposure images. Both are about four billion miles (6.4 billion kilometers) away. NASA, ESA, SwRI, JHU/APL, and the New Horizons KBO Search Team
The Kuiper Belt is a collection of icy bodies past Neptune’s orbit. These small worlds are believed to be building blocks of the Solar System, showing off a time billions of years ago when there were no planets or moons — just chunks of rocks and ice, which slowly collided and coalesced over millions of years to form the familiar landscape we see today.
New Horizons team members plan to ask for more money for this mission in late 2016, as they gather information via the Hubble Space Telescope and other sources to make their case. (They already have some targets in mind.) But the focus will definitely be on Pluto in the coming months.
Orion’s inaugural launch on Dec. 5, 2014 atop United Launch Alliance Delta 4 Heavy rocket at Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station, Florida at 7:05 a.m. Credit: Alex Polimeni/Zero-G News/AmericaSpace
Orion’s inaugural launch on Dec. 5, 2014 atop United Launch Alliance Delta 4 Heavy rocket at Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station, Florida at 7:05 a.m. Credit: Alex Polimeni/Zero-G News/AmericaSpace
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KENNEDY SPACE CENTER, FL – After four decades of waiting, the dawn of a new era in space exploration finally began with the dawn liftoff of NASA’s first Orion spacecraft on Friday, Dec. 5, 2014.
The picture perfect liftoff of Orion on its inaugural unmanned test flight relit the path to send humans beyond low Earth orbit for the first time since the launch of Apollo 17 on NASA’s final moon landing mission on Dec. 7, 1972.
NASA’s first Orion spacecraft blasts off at 7:05 a.m. atop United Launch Alliance Delta 4 Heavy Booster at Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station in Florida on Dec. 5, 2014. Launch pad remote camera view. Credit: Ken Kremer – kenkremer.com
Orion soared to space atop a United Launch Alliance Delta IV Heavy rocket at 7:05 a.m. EST from Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station in Florida.
Enjoy the spectacular launch photo gallery from my fellow space journalists and photographers captured from various up close locations ringing the Delta launch complex.
Tens of thousands of spectators descended upon the Kennedy Space Center to be an eyewitness to history and the new space era – and they were universally thrilled.
Orion is the first human rated spacecraft to fly beyond low Earth orbit since Apollo 17 and was built by prime contractor Lockheed Martin.
The EFT-1 mission was a complete success.
The Orion program began about a decade ago.
America’s astronauts flying aboard Orion will venture farther into deep space than ever before – beyond the Moon to Asteroids, Mars and other destinations in our Solar System starting around 2020 or 2021 on Orion’s first crewed flight atop NASA’s new monster rocket – the SLS – concurrently under development.
Watch for Ken’s ongoing Orion coverage from onsite at the Kennedy Space Center about the historic launch on Dec. 5.
Stay tuned here for Ken’s continuing Orion and Earth and planetary science and human spaceflight news.
Apollo 17 launch on Dec. 7, 1972. Credit: Julian Leek
NASA’s first Orion spacecraft blasts off at 7:05 a.m. atop United Launch Alliance Delta 4 Heavy Booster at Space Launch Complex 37 (SLC-37) at Cape Canaveral Air Force Station in Florida on Dec. 5, 2014. Credit: Ken Kremer – kenkremer.com Orion at dawn moments before liftoff on Dec. 5, 2014. Credit: Ken Kremer – kenkremer.com
Artist depiction of Huygens landing on Titan. Credit: ESA
It’s almost exactly 10 years ago that humanity parachuted a spacecraft into Titan, that moon of Saturn that could hold chemistry similar to what sat on Earth before life arose. Called Huygens, the probe survived for just about an hour on the surface on Jan. 14, 2005, transmitting information back about conditions there and on the way down.
Huygens is long dead, but its carrier craft is doing just fine. On Dec. 10, Cassini will make the 107th close pass by Titan to learn more about the moon’s atmosphere. Although Huygens made it to the surface fine, showing at least a basic understanding of how a parachute behaves on Titan, there’s still so much more we need to learn.
Specifically, Cassini’s different instruments have been coming up with different answers for Titan’s atmospheric density, so this flyby is hoping to resolve some of that. In part, they hope to get more accurate measurements by measuring how much drag the spacecraft experiences when it flies past the moon.
Titan’s landscape as seen by the Huygens probe descent through Saturn’s largest moons atmosphere (credit: ESA, NASA, JPL, UA, Rene Pascal)
When Huygens probed the atmosphere on its way down, scientists figured that its measurements agreed in many ways with those taken by the flying-by Voyager 2 spacecraft previously. That said, the probe also discovered “a significant correspondence of wind shear and buoyant stability structures” in the stratosphere and lower tropopause of Titan, according to a 2006 presentation on Huygens results.
Japan successfully launched their Hayabusa-2 sample return mission to asteroid 1999 JU3, and JAXA reports the spacecraft is on course and in excellent shape, with its solar panels deployed. The H-IIA F26 rocket carrying the craft blasted off from the Tanegashima Space Center in southwest Japan at 1:22:04 p.m. local time on Dec 3, 2014 (04:22 UTC) , and about two hours later, the spacecraft separated from the rocket and entered its initial planned trajectory.
Hayabusa 2 has been communicating with JAXA mission control as it starts off on its journey to land on an asteroid in 2018 and retrieve rock and dust samples to be returned to Earth in late 2020.
The first Hayabusa spacecraft completed a successful — albeit nail-biting — mission to the asteroid Itokawa, returning samples to Earth in 2010 after first reaching the asteroid in 2005. The mission almost failed as the spacecraft was plagued by technical problems and it wasn’t certain if the mechanism used to capture the samples actually worked. Ultimately, after a circuitous and troubled-filled return trip home, the canister containing microscopic rock samples made a soft landing in Australia, the first time that samples from an asteroid had been brought back to Earth for study.
Hayabusa 2’s target, Asteroid 1999 JU3 is approximately 914 meters (3,000 feet) in diameter, a little larger than Itokawa, and is roughly spherical in shape, while Itokawa had an oblong shape. 1999 JU3 has a rotation period of approximately 7.6 hours.
To avoid a repetition of the glitches experienced by the first Hayabusa spacecraft, JAXA made several changes. Hayabusa 2 has an updated ion propulsion engine as well as improved guidance and navigation systems, new antennas and a new altitude control system.
Hayabusa 2 has a mini rover called Minerva 2, and for Hayabusa 2’s sample-collecting activities, a slowly descending impactor will be used, detonating upon contact with the surface instead of the high-speed projectile used by the first Hayabusa.
This video explains the Hayabusa 2 mission and how it differs from the first Hayabusa spacecraft:
It’s a dangerous universe out there, for a budding young space-faring species.
Killer comets, planet sterilizing gamma ray bursts, and death rocks from above are all potential hazards that an adolescent civilization has to watch out for.
This week offers two close shaves, as newly discovered Near Earth Asteroids (NEAs) 2014 WC201 and 2014 WX202 pass by the Earth-Moon system.
The passage of 2014 WC201 is coming right up tonight, as the 27-metre space rock passes about 570,000 kilometres from the Earth. That’s 1.4 times farther than the distance from the Earth to the Moon.
And the good news is, the Virtual Telescope Project will be bringing the passage of 2014 WC201 live tonight starting at 23:00 Universal Time/6:00 PM EST.
Shining at an absolute magnitude of +26, 2014 WC201 will be visible as a +13 apparent magnitude “star” at closest approach at 4:51 UT (December 2nd)/11:51 PM EST (December 1st) moving through the constellation Ursa Major. This puts it within range of a large backyard telescope, though the 80% illuminated waxing gibbous Moon will definitely be a mitigating factor for observation.
The JPL Horizons ephemerides generator is an excellent place to start for crafting accurate coordinates for the asteroid for your location.
A capture of NEO 2003 DZ15 from 2015. Credit: The Virtual Telescope Project.
At an estimated 27 metres/81 feet in size, 2014 WC201 will no doubt draw “house-sized” or “building-sized” comparisons in the press. Larger than an F-15 jet fighter, asteroids such as WC201 cry out for some fresh new descriptive comparisons. Perhaps, as we near a “Star Wars year” in 2015, we could refer to 2014 WC201 as X-wing sized?
Another Apollo NEO also makes a close pass by the Earth this week, as 6-metre 2014 WX202 passes 400,000 kilometres (about the same average distance as the Earth to the Moon) from us at 19:56 UT/2:56 PM EST on December 7th. Though closer than WC201, WX202 is much smaller and won’t be a good target for backyard scopes. Gianluca Masi over at the Virtual Telescope Project also notes that WX202 will also be a difficult target due to the nearly Full Moon later this week.
The orbital path of NEO asteroid 2014 WX202. Credit: NASA/JPL
The last Full Moon of 2014 occurs on December 6th at 6:26 AM EST/11:26 Universal Time.
2014 WX202 has also generated some interest in the minor planet community due to its low velocity approach relative to the Earth. This, coupled with its Earth-like orbit, is suggestive of something that may have escaped the Earth-Moon system. Could WX202 be returning space junk or lunar ejecta? It’s happened before, as old Apollo hardware and boosters from China’s Chang’e missions have been initially identified as Near Earth Asteroids.
The Earth also occasionally hosts a temporary “quasi-moon,” as last occurred in 2006 with the capture of RH120. 2014 WX202 makes a series of more distant passes in the 2030s, and perhaps it will make the short list of near Earth asteroids for humans to explore in the coming decades.
And speaking of which, humanity is making two steps in this direction this week, with two high profile space launches.
First up is the launch of JAXA’s Hayabusa 2 from the Tanegashima Space Center on December 3rd at 4:22 UT/11:22 PM EST. The follow up to the Hayabusa asteroid sample return mission, Hayabusa 2 will rendezvous with asteroid 1999 JU3 in 2018 and return samples to Earth in late 2020. The vidcast for the launch of Hayabusa 2 goes live at 3:00 UT/10:00 PM EST on Tuesday, December 2nd.
And the next mission paving the way towards first boot prints on an asteroid is the launch of a Delta 4 Heavy rocket with EFT-1 from Cape Canaveral this Thursday morning on December 4th near sunrise at 7:05 AM EST/12:05 UT. EFT-1 is uncrewed, and will test key technologies including reentry on its two orbit flight. Expect to see crewed missions of Orion to begin around 2020, with a mission to an Earth crossing asteroid sometime in the decade after that.
NASA gotchu: An artist’s rendition of a future asteroid capture. Credit: NASA.
And there are some decent prospects to catch sight of EFT-1 on its first pass prior to its orbit raising burn over the Atlantic. Assuming EFT-1 lifts off at the beginning of its launch window, western Australia may see a good dusk pass 55 minutes after liftoff, and the southwestern U.S. may see a visible pass at dawn about 95 minutes after EFT-1 leaves the pad.
The footprint of EFT-1 on its first North American pass. Credit: Orbitron.
We’ll be tracking these prospects as the mission evolves on launch day via Twitter, and NASA TV will carry the launch live starting at 4:30 AM EST/9:30 UT.
The Orion capsule will come in hot on reentry at a blistering 32,000 kilometres per hour over four hours after liftoff in a reentry reminiscent of the early Apollo era.
Of course, if an asteroid the size of WC201 was on a collision course with the Earth it could spell a very bad day, at least in local terms. For comparison, the 2013 Chelyabinsk meteor was estimated to be 18 metres in size, and the 1908 Tunguska impactor was estimated to be 60 metres across. And about 50,000 years ago, a 50 metre in diameter space rock came blazing in over the ponderosa pine trees near what would one day be the city of Flagstaff, Arizona to create the 1,200 metre diameter Barringer Meteor Crater you can visit today.
A fragment of the Barringer meteorite on display at the Lowell Observatory. Photo by author.
All the more reason to study hazardous space rocks and the technology needed to reach one in the event that we one day need to move one out of the way!
Artist's impression of the Jupiter Icy Moons Explorer (JUICE) near Jupiter and one of its moons, Europa. Credit: ESA/AOES
It takes years of painstaking work to get a spacecraft off the ground. So when you have a spacecraft like JUICE (the Jupiter Icy Moons Explorer) set to launch in 2022, you need to back up about a decade to get things figured out. How will the spacecraft get there? What science instruments will it carry? What will the spacecraft look like and what systems will support its work?
JUICE just hit another milestone in its development a few days ago, when the European Space Agency gave the go-ahead for the “implementation phase” — the part where the spacecraft design begins to take shape. The major goal of the mission will be to better understand those moons around Jupiter that could be host to life.
The spacecraft will reach Jupiter’s system in 2030 and begin with observations of the mighty planet — the biggest in our Solar System — to learn more about the gas giant’s atmosphere, faint rings and magnetic environment. It also will be responsible for teaching us more about Europa (an icy world that could host a global ocean) and Callisto (a moon pockmarked with the most craters of anything in the Solar System.)
Its major departure from past missions, though, will come when JUICE enters orbit around Ganymede. This will the first time any spacecraft has circled an icy moon repeatedly; past views of the moon have only come through flybys by the passing-through spacecraft (such as Pioneer and Voyager) and the Galileo mission, which stuck around Jupiter’s system in the 1990s and early 2000s.
Ganymede Credit: NASA
With Ganymede, another moon thought to host a global ocean, JUICE will examine its surface and insides. What makes the moon unique in our neighborhood is its ability to create its own magnetic field, which creates interesting effects when it interacts with Jupiter’s intense magnetic environment.
“Jupiter’s diverse Galilean moons – volcanic Io, icy Europa and rock-ice Ganymede and Callisto – make the Jovian system a miniature Solar System in its own right,” the European Space Agency stated when the mission was selected in 2012.
“With Europa, Ganymede and Callisto all thought to host internal oceans, the mission will study the moons as potential habitats for life, addressing two key themes of cosmic vision: what are the conditions for planet formation and the emergence of life, and how does the Solar System work?”
