Artist's conception of the futuristic Hypersonic Inflatable Aerodynamic Decelerator (HIAD) entering the atmosphere of Mars. Credit: NASA
Assuming we can get humans all the way to Mars, how the heck do we land them on the Red Planet? The challenge is the atmosphere of Mars is very thin, making parachutes tricky. Heavier payloads require unique ideas to get them on the surface, such as the wild ride we saw for the Curiosity rover.
Since humans and their cargo would have much more mass, one of the ideas NASA is exploring is something called the Hypersonic Inflatable Aerodynamic Decelerator (HIAD). And here’s the surprising thing — it looks a little like those donut toys that small children play with.
“In a real spacecraft, a connected stack of donut rings would be inflated before entering a planet’s atmosphere to slow the vehicle for landing,” NASA wrote in an update last June. “The spaceship would look a lot like a giant cone with the space donuts assembled, similar to a child’s stacking ring toy. The stacked-cone concept would allow NASA to land heavier payloads to the surface of the planet than is currently possible, and could eventually be used to deliver crews.”
The concept has been heavily highlighted in the media this week, but what is less spoken about is the uncertainty of the project. The June update came after NASA performed structural testing on a prototype in NASA Armstrong’s Flight Loads Laboratory for seven months in 2013 and 2014. And that was the end of a three-year project under NASA’s Game-Changing Technology program.
What project officials hope for is that they will win a proposal to do more work in 2016. If that works out, they’ll perform more testing on the project. NASA says the technology could be available for use as soon as 2020, but we’ll have to see how things work out.
The principal investigator for its materials and structure is Anthony Calomino, who is with NASA Langley. You can find more information on HIAD on this website.
The Hypersonic Inflatable Aerodynamic Decelerator prototype undergoes structural tests at NASA Armstrong’s Flight Loads Laboratory in this undated photo. Tests took place in 2013 and 2014. Credit: NASA
Commander Barry “Butch” Wilmore on the International Space Station shared this beautiful image of #sunrise earlier today, 1/3/15. Credit: NASA/Barry ‘Butch’ Wilmore
Good Morning, Space Station!
It’s sunrise from space – one of 16 that occur daily as the massive lab complex orbits the Earth about every 90 minutes while traveling swiftly at about 17,500 mph and an altitude of about 250 miles (400 kilometers).
Just stare in amazement at this gorgeous sunrise view of “Our Beautiful Earth” taken earlier today, Jan. 3, 2015, aboard the International Space Station (ISS) by crewmate and NASA astronaut Barry “Butch” Wilmore.
And smack dab in the middle is the Canadian-built robotic arm that will soon snatch a soaring Dragon!
Wilmore is the commander of the ISS Expedition 42 crew of six astronauts and cosmonauts hailing from three nations: America, Russia and Italy.
He is accompanied by astronauts Terry Virts from NASA and Samantha Cristoforetti from the European Space Agency (ESA) as well as by cosmonauts Aleksandr Samokutyayev, Yelena Serova, and Anton Shkaplerov from Russia.
All told the crew of four men and two women see 16 sunrises and 16 sunsets each day. During the daylight periods, temperatures reach 200 ºC, while temperatures plunge drastically during the night periods to -200 ºC.
Here’s another beautiful ISS sunset view captured on Christmas by Terry Virts:
Astronaut Terry Virts on the International Space Station shared this beautiful sunrise image on Twitter saying “Sunrise on Christmas morning – better than any present I could ask for!!!!” Credit: NASA/Terry Virts
Virts tweeted the picture and wrote: “Sunrise on Christmas morning – better than any present I could ask for!!!!”
Another treasure from Virts shows the many splendid glorious colors of Earth seen from space but not from the ground:
Sunset Over the Gulf of Mexico “In space you see intense colors, shades of blue that I’d never seen before,” says NASA astronaut Terry Virts. Credit: NASA/@astro_terry
“In space you see intense colors, shades of blue that I’d never seen before,” says Virts from his social media accounts (http://instagram.com/astro_terry/) (http://instagram.com/iss).
“It’s been said a thousand times but it’s true: There are no borders that you can see from space, just one beautiful planet,” he says. “If everyone saw the Earth through that lens I think it would be a much better place.”
And many of the crews best images are taken from or of the 7 windowed Cupola.
Here’s an ultra cool shot of Butch waving Hi!
“Hi from the cupola!” #AstroButch. Credit: NASA/ISS
And they all eagerly await the launch and arrival of a Dragon! Indeed it’s the SpaceX cargo Dragon currently slated for liftoff in three days on Tuesday, Jan. 6.
Weather odds are currently 60% favorable for launch of the unmanned space station resupply ship on the SpaceX CRS-5 mission.
The launch was postponed from Dec. 19 when a static fire test of the first stage engines on Dec. 17 shut down prematurely.
A second static fire test of the SpaceX Falcon 9 went the full duration of approximately 3 seconds and cleared the path for a liftoff attempt after the Christmas holidays.
New countdown clock at NASA’s Kennedy Space Center displays SpaceX Falcon 9 CRS-5 mission and recent Orion ocean recovery at the Press Site viewing area on Dec. 18, 2014. Credit: Ken Kremer – kenkremer.com
CRS-5 is slated to blast off at 6:20 a.m. EST Tuesday, Jan. 6, 2015, atop a SpaceX Falcon 9 rocket from Cape Canaveral Air Force Station in Florida.
NASA Television live launch coverage begins at 5 a.m. EST.
Assuming all goes well, Dragon will rendezvous at the ISS on Thursday, Jan. 8, for grappling and berthing by the astronauts maneuvering the 57 foot-long (22 m) Canadian built robotic arm.
Remember that you can always try and catch of glimpse of the ISS flying overhead by checking NASA’s Spot the Station website with a complete list of locations.
And don’t forget to catch up on the Christmas holiday and New Year’s 2015 imagery and festivities from the station crews in my recent stories – here, here and here.
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
Spectacular View of the Alps From Space! Expedition 42 Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) took this photograph of the Alps from the International Space Station. She wrote, "I'm biased, but aren't the Alps from space spectacular? What a foggy day on the Po plane, though! #Italy" Credit: NASA/ESA/Samantha Cristoforetti
Spectacular View of the Alps From Space! Expedition 42 Flight Engineer Samantha Cristoforetti of the European Space Agency (ESA) took this photograph of the Alps from the International Space Station. She wrote, “I’m biased, but aren’t the Alps from space spectacular? What a foggy day on the Po plane, though! #Italy” Credit: NASA/ESA/Samantha Cristoforetti
Updated with more images[/caption]
The current six person crew includes astronauts and cosmonauts from three nations – America, Russia, and Italy – and the four men and two women are celebrating New Year’s 2015 aboard the massive orbiting lab complex.
Happy New Year! Celebrating from space with @AstroTerry. Credit: NASA/Terry Virts
They comprise Expedition 42 Commander Barry “Butch” Wilmore and Terry Virts from NASA, Samantha Cristoforetti from the European Space Agency (ESA), and cosmonauts Aleksandr Samokutyayev, Yelena Serova, and Anton Shkaplerov from Russia.
Beauty everywhere! Flying from the Mediterranean to the Caspian Sea, this appeared through the clouds.#HelloEarth. Credit: NASA/ESA/Samantha Cristoforetti
The ISS has been continuously occupied by humans for 15 years. And they are joined by Robonaut 2 who recently got legs.
This area saw some serious action about 350 million years ago! Gweni-Fada meteorite crater in #Chad. Credit: NASA/ESA/Samantha Cristoforetti
Terry Virts and Samantha Cristoforetti have been especially prolific in picture taking and posting to social media for us all to enjoy the view while speeding merrily along at 17,500 mph from an altitude of about 250 miles (400 kilometers) above Earth.
Here’s a special New Year video greeting from Wilmore and Virts:
Video Caption: Happy New Year from the International Space Station from NASA astronauts Barry “Butch” Wilmore and Terry Virts. Credit: NASA
“Happy New Year from the International Space Station!” said Wilmore.
“We figure that we will be over midnight somewhere on the Earth on New Year’s for 16 times throughout this day. So we plan to celebrate New Year’s 16 times with our comrades and our people down on Earth.”
No sunsets until Jan 4th- we are in a “high beta” orbit now, so this is as dark as it gets. Credit: NASA/Terry Virts
“We wish everybody a happy, healthy, and prosperous 2015 as we get the awesome privilege of celebrating New Year’s here on the space station with our six station crewmates,” added Virts!
“We’ll enjoy our 16 New Year’s celebrations here.”
Part of the #Aral sea peaking through the clouds as we flew into #Kazakhstan! #HelloEarth. Credit: NASA/ESA/Samantha Cristoforetti
They plan to celebrate the dawn of 2015 with fruit juice toasts, NASA reports.
The year 2015 starts officially for the station crew at midnight by the Universal Time Clock (UTC), also known as Greenwich Mean Time (GMT), in London, or at 7 p.m. EST Dec. 31.
If I couldn’t be in space right now I’d want to be here- #Hawaii. Credit: NASA/Terry Virts
New Year’s Day 2015 is a day off for the crew.
And I’m certain they’ll be gazing out the windows capturing more views of “Our Beautiful Earth!”
42 è la risposta! // 42 is the answer! #Expedition42 Guide to the galaxy. Credit: @NASA_Astronauts #AstroButch
And don’t forget to catch up on the Christmas holiday imagery and festivities from the station crews in my recent stories – here and here.
#NewYork NewYork! Can almost see the Statue of Liberty. Which is, by the way, #UNESCO#WorldHeritage! Credit: NASA/ESA/Samantha Cristoforetti
Be sure to remember that you can always try and catch of glimpse of the ISS flying overhead by checking NASA’s Spot the Station website with a complete list of locations.
ISS streaks over Princeton, NJ – time lapse image. Credit: Ken Kremer
Meanwhile the crew continues science operations and preparations for next week’s arrival of the next unmanned space station resupply ship on the SpaceX CRS-5 mission.
CRS-5 is slated to blast off atop a SpaceX Falcon 9 rocket on Jan. 6 from Cape Canaveral Air Force Station in Florida.
SpaceX Falcon 9 rocket is set to soar to the ISS after completing a successful static fire test on Dec. 19 ahead of the planned CRS-5 mission for NASA in early January 2015. Credit: Ken Kremer – kenkremer.com
Stay tuned here for Ken’s continuing Earth and planetary science and human spaceflight news.
ISS astronauts Barry “Butch” Wilmore, NASA, Samantha Cristoforetti, ESA, and Terry Virts, NASA, send Christmas 2014 greetings from the space station to the people of Earth. Credit: NASA/ESAISS Expedition 42. Credit: NASA/ESA/Roscosmos
A new Avengers movie. A reboot of the Star Wars franchise. The final installment of the Hunger Games. The Martian makes it to the big screen. Yup, even if the zombie apocalypse occurs in 2015, it’ll still be a great year. But trading science fiction for fact, we’re also on track for a spectacular year in space science and exploration as well.
Humanity will get its first good look at Ceres and Pluto, giving us science writers some new pics to use instead of the same half dozen blurry dots and artist’s conceptions. SpaceX will also attempt a daring landing on a sea platform, and long duration missions aboard the International Space Station will get underway. And key technology headed to space and on Earth may lead the way to opening up the window of gravitational wave astronomy on the universe. Here’s 10 sure-fire bets to watch for in the coming year from Universe Today:
LISA Pathfinder deployed at L1. Credit: ESA/Artist’s concept.
10. LISA Pathfinder
A precursor to a full-fledged gravitational wave detector in space, LISA Pathfinder will be launching atop a Vega rocket from Kourou, French Guiana in July 2015. LISA stands for the Laser Interferometer Space Antenna, and the Pathfinder mission will journey to the L1 Lagrange point between the Earth and the Sun to test key technologies. LISA Pathfinder will pave the way for the full fledged LISA space platform, a series of three free flying spacecraft proposed for launch in the 2030s.
Looking down one of the arms of LIGO Hanford. Credit: Photo by author.
9. AdLIGO Goes Online
And speaking of gravitational waves, we may finally get the first direct detection of the same in 2015, when Advanced LIGO is set to go online. Comprised of two L-shaped detectors, one based in Livingston Louisiana, and another in Hanford Washington, AdLIGO will feature ten times the sensitivity of the original LIGO observatory. In fact, as was the case of the hunt for the Higgs-Boson by CERN, a non-detection of gravitational waves by AdLIGO would be a much stranger result!
A replica of the Hubble Space Telescope on display at the Kennedy Space Center. Credit: Photo by author.
8. Hubble Turns 25
Launched on April 24th, 1990 aboard the Space Shuttle Discovery, the Hubble Space Telescope celebrates 25 years in space in 2015. The final servicing mission in 2009 gave Hubble a reprieve from the space junk scrap heap, and the orbiting telescope is still going strong. Hubble has no less than pushed the limits in modern astronomy to become a modern icon of the space age.
MESSENGER wraps up its mission in 2015. Credit: NASA/MESSENGER/JPL/APL.
7. The End of MESSENGER
NASA’s Mercury exploring spacecraft wraps up its mission next year. Launched in 2004, MESSENGER arrived in orbit around Mercury after a series of flybys on March 18th, 2011. MESSENGER has mapped the innermost world in detail, and studied the space environment and geology of Mercury. In late March 2015, MESSENGER will achieve one final first, when it impacts the surface of Mercury at the end of its extended mission.
Akatsuki on Earth prior to departure. Credit: JAXA.
6. Akatsuki at Venus
This Japanese spacecraft missed orbital insertion a few years back, but gets a second chance at life in 2015. Launched in 2010 atop an H-IIA rocket from the Tanegashima Space Center in Japan, Akatsuki failed to enter orbit around Venus at the end of 2010, and instead headed out for a heliocentric path around the Sun. Some quick thinking by JAXA engineers led to a plan to attempt to place Akatsuki in Venusian orbit in November 2015. This would be a first for the Japanese space agency, as attempts by JAXA at placing a spacecraft in orbit around another planet – including the Mars Nozomi probe – have thus far failed.
The target for the Falcon-9 first stage later next week. Credit: SpaceX.
5. SpaceX to Attempt to Land on a Sea Platform
It’ll definitely rock if they pull it off next week: on January 6th, a SpaceX Falcon 9 rocket will lift off from Cape Canaveral with its Dragon spacecraft headed to the International Space Station on mission CRS-5. Sure, these resupply missions are becoming routine, but after liftoff, SpaceX is attempting something new and daring: landing the Falcon-9 first stage Buck Rodgers style, “fins first” on a floating barge. This is the next step in ultimately proving the feasibility of having the rocket fly back to the launch site for eventual reuse. If nothing else, expect some stunning video of the attempt soon!
An artist’s concept of an asteroid retrieval mission. Credit: NASA.
4. NASA to Decide on an Asteroid Mission
Some major decisions as to the fate and the future of manned space exploration are due next year, as NASA is expected to decide on the course of action for its Asteroid Redirect Mission. The current timeline calls for the test of the SLS rocket in 2018, and the launch of a spacecraft to recover an asteroid and place it in orbit around the Moon in 2019. If all goes according to plan – a plan which could always shift with the political winds and future changes in administrations – we could see astronauts exploring a captured asteroid by the early 2020s.
Astronaut Scott Kelly (left), and cosmonaut Mikhail Korniyenko. Credit: NASA/Roscomos.
3. Long Duration ISS Missions
Beginning in 2015, astronauts and cosmonauts will begin year-long stays aboard the ISS to study the effects of long duration space missions. In March of 2015, cosmonaut Mikhail Korniyenko and U.S. astronaut Scott Kelly will launch as part of Expedition 43 headed to the ISS. The Russians have conducted stays in space longer than a year aboard the Mir space station, but Kelly’s stay aboard the ISS will set a duration record for NASA astronauts. Perhaps, a simulated “Mars mission” aboard the ISS could be possible in the coming years?
An artist’s concept of Dawn approaching 1 Ceres. Credit: NASA/JPL.
2. Dawn at Ceres
Fresh off of exploring Vesta, NASA’s Dawn spacecraft will become the first mission to enter orbit around a second object, the asteroid 1 Ceres next year in April 2015. The largest asteroid and the first object of its kind discovered on the first day of the 19th century, Ceres looks to be a fascinating world in its own right. Does it possess water ice? Active geology? Moons of its own? If Dawn’s performance at Vesta was any indication, we’re in for another exhilarating round of space exploration!
And artist’s conception of New Horizons at Pluto. Credit: NASA/JPL/Thierry Lombry.
1. New Horizons at Pluto
An easy No. 1,we finally get our first good look at Pluto in July, as NASA’s New Horizons spacecraft flies less than 14,000 kilometres from the surface of the distant world. Launched in 2006, New Horizons will “thread the needle” between Pluto and Charon in a flurry of activity as it passes by. New Horizons will then turn back as it passes into the shadows of Pluto and Charon and actually view the two worlds as they occult the distant Sun. And from there, New Horizons will head out to explore Kuiper Belt Objects of opportunity.
And these are just the top stories that are slated to be big news in space in 2015. Remember, another Chelyabinsk meteor or the next big comet could drop by at any time… space news can be unpredictable, and its doubtless that 2015 will have lots more surprises in store.
Rendering showing the location and size of water vapor plumes coming from Europa's south pole. Credit: NASA/ESA/L. Roth/SWRI/University of Cologne
It was about this time last year that Europa really began to excite us again. Following a sci-fi movie about the Jupiter moon, astronomers using the Hubble Space Telescope announced they had found possible water vapor near the icy moon — maybe from geysers erupting from its icy surface. (That is, if the finding was not due to signal noise, which researchers acknowledged at the time.)
As NASA ramped up (distant) plans to get close to Europa again, scientists began plumbing data from the Cassini spacecraft to see if its glance at the moon circa 2001 revealed anything. Turns out that the spacecraft didn’t see any sign of a plume. Which leads to the greater question, what is happening?
Now scientists are scurrying for a second look. Hubble is in the midst of a six-month search of the moon (from afar) to see if any more of the plumes are showing up. Now the theory is that the plumes, if they do exist, would be intermittent — at least, that’s according to the team looking at data from Cassini’s ultraviolet imaging spectograph (UVIS).
Europa (bottom left) in orbit around its planet, Jupiter, as spotted from the Cassini spacecraft in 2000. Credit: NASA/JPL/University of Arizona
“It is certainly still possible that plume activity occurs, but that it is infrequent or the plumes are smaller than we see at Enceladus,” stated co-author Amanda Hendrix, a Cassini UVIS team member with the Planetary Science Institute in Pasadena. “If eruptive activity was occurring at the time of Cassini’s flyby, it was at a level too low to be detectable by UVIS.”
This finding was part of a greater set of observations showing that it’s not really Europa that is contributing plasma (superheated gas) to space — it’s the ultra-volcanic moon Io. And Europa itself is sending out 40 times less oxygen than previously believed to the area surrounding the moon.
“A downward revision in the amount of oxygen Europa pumps into the environment around Jupiter would make it less likely that the moon is regularly venting plumes of water vapor high into orbit, especially at the time the data was acquired,” NASA stated. This would stand in contrast to, say, Saturn’s Enceladus — which Cassini has seen sending plumes high above the moon’s surface.
The findings were presented at the American Geophysical Union meeting earlier this month and also published in the Astrophysical Journal. The research was led by Don Shemansky, a Cassini UVIS team member with Space Environment Technologies.
Image of a gecko foot, whose ability to stick on to surfaces inspired NASA's Jet Propulsion Laboratory to develop a possible space debris snagging system. Credit: Wikimedia Commons
We’ve written extensively about the orbital debris problem here on Universe Today. In a nutshell, just about every time we launch something from Earth there are bits and pieces that are left behind. Screws. Paint flecks. Sometimes bigger pieces from rocket stages, or at worst, dysfunctional satellites.
Added to the list of lasers, magnets, robot hands and other ideas to get space junk out of orbit is a new one from NASA — gecko grippers. Yes, lizard hands. The idea is by using techniques from these animal appendages, we might be able to efficiently snag dead satellites or other debris at low cost.
Space debris is all whizzing above us and puts us at risk for devastating crashes that can create a sort of prison of debris for any spacecraft hoping to fly above the atmosphere. We’ve already had to move the shuttle and International Space Station due to threats, and the fear is as more satellites reach space, the problem will get worse.
Here’s what NASA has to say about the idea, which is led by Aaron Parness, a robotics researcher at the Jet Propulsion Laboratory:
The gripping system … was inspired by geckos, lizards that cling to walls with ease. Geckos’ feet have branching arrays of tiny hairs, the smallest of which are hundreds of times thinner than a human hair. This system of hairs can conform to a rough surface without a lot of force. Although researchers cannot make a perfect replica of the gecko foot, they have put “hair” structures on the adhesive pads of the grippers.
The grippers were put through their paces in a simulated microgravity test in August (recently highlighted on NASA’s website). On a plane that flew parabolas with brief “weightless” periods, the grippers managed to grab on to a 20-pound cube and a 250-pound researcher-plus-spacecraft-material-panels combination.
NASA-funded researchers test “gecko grippers” on a simulated-microgravity flight to see how effective they could be for snagging satellites. Here, a researcher has strapped spacecraft-like panels to his body to perform the test. Credit: NASA/YouTube (screenshot)
The key limitation was researchers actually held on to their invention themselves, but eventually they hope to use a robotic leg or arm to achieve the same purpose. Meanwhile, on the ground, the grippers have been used on dozens of spacecraft surfaces in a vacuum and in temperatures simulating what you’d find in orbit.
There’s no guarantee that the system itself will make it to space, as it’s still in the early stages of testing. But in a statement, Parness said he thinks it’s possible that “our system might one day contribute to a solution.” NASA also said these could be used for small satellites to attach to the space station, but development would need to move quickly in that case. The station is only guaranteed to be in use until 2020, with possible extension to 2024.
Artist's impression of the MESSENGER spacecraft, with Mercury in the background. Credit: JHUAPL
If all goes well — and there’s no guarantee of this — NASA’s venerable Mercury sentinel may have an extra month of life left in it before it goes on a death plunge to the planet’s surface. Managers think they have found a way to stretch its fuel to allow the spacecraft to fly until April, measuring the planet’s magnetic field before falling forever.
Success will partially depend on a maneuver that will take place on Jan. 21, when MESSENGER (MErcury Surface, Space ENvironment, GEochemistry, and Ranging) will raise its minimum altitude. But moreover, pushing the impact back to April will be the first extended test of using helium as a propellant in hydrazine thrusters, components that were not actually designed to get this done. But the team says it is possible, albeit less efficiently.
“Typically, when … liquid propellant is completely exhausted, a spacecraft can no longer make adjustments to its trajectory,” stated Dan O’Shaughnessy, a mission systems engineer with the Johns Hopkins University Applied Physics Laboratory.
“However, gaseous helium was used to pressurize MESSENGER’s propellant tanks, and this gas can be exploited to continue to make small adjustments to the trajectory.”
A crater on Mercury at the edge of the larger Oskison crater located in the plains north of Caloris basin. Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington
However long the mission does end up lasting, MESSENGER has shown us some unexpected things about the planet that is closest to the Sun. Turns out that water ice likely lies in some of the shadowed craters on its surface. And that organics, which were possibly delivered to Earth via comets and asteroids, are also on Mercury.
Atmospheric changes have been seen in the tenuous gases surrounding Mercury, showing a definite influence from the nearby Sun. And even the magnetic field lines on the planet are influenced by charged particles from our closest star.
And with MESSENGER viewing the planet from close-up, NASA and Johns Hopkins hope to learn more about volcanic flows, how crater walls are structured, and other features that you can see on the airless planet. Despite a 10-year mission and more than three years orbiting Mercury, it’s clear from MESSENGER that there is so much more to learn.
A raw shot from the front hazcam of NASA's Opportunity rover taken on Sol 3757, on Aug. 19, 2014. Credit: NASA/JPL-Caltech
Feel like visiting a dwarf planet today? How about a comet or the planet Mars? Luckily for us, there are sentinels across the Solar System bringing us incredible images, allowing us to browse the photos and follow in the footsteps of these machines. And yes, there are even a few lucky humans taking pictures above Earth as well.
Below — not necessarily in any order — are some of the best space photos of 2014. You’ll catch glimpses of Pluto and Ceres (big destinations of 2015) and of course Comet 67P/Churyumov–Gerasimenko (for a mission that began close-up operations in 2014 and will continue next year.) Enjoy!
The Philae that could! The lander photographed during its descent by Rosetta. Credit: ESA/Rosetta/MPS for Rosetta Team/The Aurora Borealis seen from the International Space Station on June 28, 2014, taken by astronaut Reid Wiseman. Credit: Reid Wiseman/NASA.NASA’s Mars Curiosity Rover captures a selfie to mark a full Martian year — 687 Earth days — spent exploring the Red Planet. Curiosity Self-Portrait was taken at the ‘Windjana’ Drilling Site in April and May 2014 using the Mars Hand Lens Imager (MAHLI) camera at the end of the roboic arm. Credit: NASA/JPL-Caltech/MSSSThis global map of Dione, a moon of Saturn, shows dark red in the trailing hemisphere, which is due to radiation and charged particles from Saturn’s intense magnetic environment. Credit: NASA/JPL/Space Science InstituteComet Siding Spring shines in ultraviolet in this image obtained by the Mars Atmosphere and Volatile EvolutioN (MAVEN) spacecraft. Credit: Laboratory for Atmospheric and Space Physics/University of Colorado; NASAThis “movie” of Pluto and its largest moon, Charon b yNASA’s New Horizons spacecraft taken in July 2014 clearly shows that the barycenter -center of mass of the two bodies – resides outside (between) both bodies. The 12 images that make up the movie were taken by the spacecraft’s best telescopic camera – the Long Range Reconnaissance Imager (LORRI) – at distances ranging from about 267 million to 262 million miles (429 million to 422 million kilometers). Charon is orbiting approximately 11,200 miles (about 18,000 kilometers) above Pluto’s surface. (Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute)The Mars Reconnaissance Orbiter took this image of a “circular feature” estimated to be 1.2 miles (2 kilometers) in diameter. Picture released in December 2014. Credit: NASA/JPL-Caltech/University of ArizonaJets of gas and dust are seen escaping comet 67P/C-G on September 26 in this four-image mosaic. Click to enlarge. Credit: ESA/Rosetta/NAVCAMCeres as seen from the Earth-based Hubble Space Telescope in 2004 (left) and with the Dawn spacecraft in 2014 as it approached the dwarf planet. Hubble Credit: NASA, ESA, J. Parker (Southwest Research Institute), P. Thomas (Cornell University), L. McFadden (University of Maryland, College Park), and M. Mutchler and Z. Levay (STScI). Dawn Credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA. Photo Combination: Elizabeth Howell
Canadian astronaut Chris Hadfield in the Cupola of the International Space Station. Credit: NASA/CSA
While the world was enchanted with Chris Hadfield’s social media posts last year, a new video has the retired astronaut talking about loftier things. Say, for example, how humanity landed a camera on the Saturn moon Titan back in 2005. Or to be more practical, the fact that smallpox was eradicated in its naturally occurring form.
In his talks and books, Hadfield describes himself as one who never focuses on complaining. He was almost yanked from his command of the International Space Station due to a medical issue, but he pressed on and convinced the doctors to let him fly. And in this new video, he focuses on what humans do generally to make the world better — imperfect as it is.
“There are problems with everything, and nothing’s perfect, but that shouldn’t be cause to moan. That should be cause to achieve. Our world is a better place than we often claim it to be,” Hadfield said. “We live the way we do,” he added, “because people chose to tackle their problems, head on.”
The video appears to have a heavy emphasis on the Bill & Melinda Gates Foundation, a gigantic philanthropic network that works to improve lives in the developing world and also for the disadvantaged in the United States. But there are many ways to give back to your community, even through gestures as simple as volunteering.
Here are some examples in the space world (note that these aren’t necessarily endorsements for the organizations, but just ideas for making contributions in space and astronomy):
Cosmoquest, which runs online astronomy courses and also allows citizens to map extraterrestrial bodies right alongside astronomers.
Astronomers Without Borders brings astronomy education across the world, particularly to developing countries.
Uwingu says that half of its donations goes to grants to support learning in astronomy.
Other examples of space-y charity could include volunteering or donating to a local school or university, joining one of the numerous volunteer organizations in astronomy, or getting involved in a space advocacy group.
Vertical structures cause shadows on Saturn's B ring in this August 2009 picture from the Cassini spacecraft. Credit: NASA/JPL/Space Science Institute
From a distance, Saturn’s rings look like a sheer sheet, but peer up close and you can see that impression is a mistake. Shadows from rubble believed to be two miles (3.2 kilometers) high are throwing shadows upon the planet’s B ring in this image from the Cassini spacecraft.
While the picture is from 2009, it caught the eye of the lead of the Cassini imaging team, who wrote eloquently about it in a blog post recently celebrating the link between wonder and the holidays.
“I have often thought: What a surreal sight this would be if you were flying low across the rings in a shuttle craft. To your eyes, the rings would seem like a gleaming white, scored, gravelly sheet below you, extending nearly to infinity,” wrote Carolyn Porco, the lead imager for the mission at the Cassini Imaging Central Laboratory for Operations (CICLOPS).
“And as you flew, you would see in the distance a wall of rubble that, eventually, as it neared, you would come to realize towered two miles above your head. There isn’t another sight like it in the Solar System!”
A 2007 artist impression of the aggregates of icy particles that form the ‘solid’ portions of Saturn’s rings. These elongated clumps are continually forming and dispersing. The largest particles are a few metres across.They clump together to form elongated, curved aggregates, continually forming and dispersing. Credit: NASA/JPL/Univ. of Colorado
Besides the inherent beauty and delicacy of this picture, another notable feature is how hard it is to capture. According to CICLOPS, one can only take this photo during Saturn’s equinox — once every 15 years in Earth time! That’s because the angle of the Sun’s light reaches the plane of the rings, allowing shadows to fall. The area itself is likely filled with moonlets of a kilometer (0.62 miles) in size.
“It is possible that these bodies significantly affect the ring material streaming past them and force the particles upward, in a ‘splashing’ manner,” the CICLOPS website notes.
We’ve included more pictures of Saturn’s rings below, all taken from the Cassini spacecraft. The machine is healthy and working hard after about 10.5 years working at the planet. One of its major tasks now is to observe changes in the planet and particularly its large moon, Titan, as the system nears the solstice.
Saturn’s rings. Credit: NASA/JPL/Space Science Institute.Enceladus and Tethys hang below Saturn’s rings in this image from the Cassini spacecraft. Credit: NASA/JPL-Caltech/SSRaw Cassini image of Titan and Enceladus backdropped by Saturn’s rings. Image Credit: NASA/JPL/Space Science InstituteA close look at Enceladus, with Saturn’s rings in the background. Credit: NASA/JPL/Space Science InstituteThe Cassini spacecraft looks close at Saturn to frame a view encompassing the entire C ring. Image credit: NASA/JPL/SSIRaw image of Saturn’s rings. Credit: NASA/JPL/Space Science InstituteRhea poses with Saturn’s rings; Janus and Prometheus are off in the distance. Credit: NASA/JPL/Space Science Institute. Click for larger versionSpokes visible in Saturn’s B ring. Credit: NASA/JPL/Space Science InstituteLooming vertical structures, seen here for the first time and created by Saturn’s moon Daphnis, rise above the planet’s otherwise flat, thin disk of rings to cast long shadows in this Cassini image. Credit: CICLOPS
