A recent image taken by the HiRISE camera on the Mars Reconnaissance Orbiter of the Curiosity rover in "The Kimberly" area in Gale Crater on Mars. Credit: NASA/JPL/University of Arizona
First of all, I completely stole this headline from NASA engineer Bobak Ferdowski (AKA The Mohawk Guy) on Twitter. Second, this is just a great image of the Curiosity rover sitting on Mars, including views of its tracks and where it did a wheelie or two. Plus, where the rover now sits is a very intriguing region called “The Kimberly.” Curiosity will soon whip out its drill to see if it can find hints of organic material, which could be a biomarker — the holy grail of Mars exploration.
Find out why this is such an intriguing region in this video:
Astronaut Drew Feustel reenters the space station after completing an 8-hour, 7-minute spacewalk at on Sunday, May 22, 2011. He and fellow spacewalker Mike Fincke conducted the second of the four EVAs during the STS-134 mission. Credit: NASA
Talk about a high-flying career! Being a government astronaut means you have the chance to go into space and take part in some neat projects — such as going on spacewalks, moving robotic arms and doing science that researches the nature of the human body.
Behind the glamor and the giddiness of flight, however, astronauts also need to pay their bills on Earth. How much you get paid as an astronaut depends on what agency you work for – as well as your experience, just like any other career.
The information below for NASA, the European Space Agency (ESA) and the Canadian Space Agency (CSA) is current as of April 2014, unless otherwise noted. Three agencies do not disclose salary scales online, at least in English pages: the Japan Aerospace Exploration Agency (JAXA), the Russian Federal Space Agency (Roscosmos) and the China National Space Administration (CNSA).
NASA
Astronaut Chris Cassidy training for a spacewalk in NASA’s Neutral Buoyancy Laboratory. Credit: Robert Markowitz
NASA has 43 active astronauts and eight astronauts-in-training who were selected in 2013. Until basic training is completed, which takes about two years, selectees are called “astronaut candidates”. (Astronauts from other agencies, such as ESA and CSA, often join NASA selectees for basic training.) Then even after they’re selected, it could be years more before they take a spaceflight.
Some astronauts are hired as civilian employees while others come over from the military. Civilian astronauts are paid according to a government scale that ranges from classifications GS-11 to GS-14.
In 2012, employees living in Houston (where astronaut training facilities are located) make a minimum of $64,724 for a GS-11 to a maximum of $141,715 for a GS-14. As employees pick up more qualifications, responsibility and experience, their salaries increase.
Military salaries were not disclosed, but NASA said those employees from the armed forces “remain in an active duty status for pay, benefits, leave, and other similar military matters.”
European Space Agency
Expedition 36/37’s Luca Parmitano, a European Space Agency astronaut, moments after landing Nov. 10, 2013. Credit: NASA/Carla Cioffi
ESA’s most recent astronaut class was selected in 2009. They have all either flown in space, or have been assigned to future missions aboard the International Space Station. Astronauts are paid between the A2 and A4 scales set by the Coordinated Organisations, a group of European intergovernmental groups.
“Upon entering the ESA Astronaut Corps, new recruits will generally be paid at the A2 level. Following the successful completion of the basic astronaut training, the recruit will be paid in accordance with the grade A3. The promotion to the grade A4 generally follows after the first spaceflight,” the European Space Agency stated.
While ESA’s website does not specify the salaries for astronauts beyond the grade, another Coordinated Organisation – called the North Atlantic Treaty Organisation – lists the annual A2 salary as 58,848 Euros ($81,404) and the A4 salary as 84,372 Euros ($116,619.)
Canadian Space Agency
David Saint-Jacques (left) with fellow Canadian astronaut trainee Jeremy Hansen. The two men were selected as astronauts in 2009. Credit: NASA
Canada has two active astronauts, neither of which have been assigned to a spaceflight yet. The CSA does not disclose on its website how much astronauts make, but some information is available on the website of the Privy Council Office – an advisory group to Canada’s prime minister and senior officials.
As of 2011, astronauts are paid a minimum of $89,100 Canadian ($80,897) in Grade 1 and a maximum of $174,000 Canadian ($158,470) in Grade 3. Newly minted astronaut candidates appear to move to Level 2 upon completing basic astronaut training, which takes two years, and then increase their salary with more experience.
Military astronauts are paid according to a separate scale that was not disclosed in PCO documents.
Becoming a government astronaut
The European Space Agency’s astronaut class of 2009 (left to right): Andreas Mogensen, Alexander Gerst, Samantha Cristoforetti, Thomas Pesquet, Luca Parmitano, Timothy Peake. Credit: European Space Agency/S. Corvaja
Generally, you must be the citizen of a particular country with a space program to apply as an astronaut. U.S. astronauts are U.S. citizens, European astronauts are citizens of European countries, and so forth.
Each space agency has periodic astronaut selections where they put out a call for candidates and then winnow down the list to a handful of people selected for astronaut training. The United States had its last selection in 2013, and ESA, CSA and JAXA did theirs in 2009.
While space agencies are careful not to specify certain kinds of degrees or universities for applicants, generally speaking astronauts have technical, medical or military backgrounds.
Astronauts are best known by the public for their time in space, but in reality they will spend most of their careers on the ground. International Space Station astronauts are expected to be proficient in station systems, science and spacewalks. They also must learn how to operate the Soyuz spacecraft that gets them into space, and to learn Russian since that country is a major partner of the International Space Station.
When astronauts aren’t training, they’re working to support other missions — sometimes in locations such as NASA’s Mission Control or in pools used for spacewalk training. They additionally spend hours of time doing outreach for schools and other audiences, and travelling all over the world to the various training centers used to get people ready for spaceflight.
It’s a tough career, but those who make the trek into space say the view is totally worth it.
Astronaut Edward White, the first American to walk in space. Image Credit: NASA
Want to learn more?
The following pages give you more information on becoming an astronaut, and what to expect once you get selected.
Chelyabinsk fireball recorded by a dashcam from Kamensk-Uralsky north of Chelyabinsk where it was still dawn. A study of the area near this meteor air burst revealed similar signatures to the Tall el_Hammam site.
This Earth Day, Tuesday, April 22, three former NASA astronauts will present new evidence that our planet has experienced many more large-scale asteroid impacts over the past decade than previously thought… three to ten times more, in fact. A new visualization of data from a nuclear weapons warning network, to be unveiled by B612 Foundation CEO Ed Lu during the evening event at Seattle’s Museum of Flight, shows that “the only thing preventing a catastrophe from a ‘city-killer’ sized asteroid is blind luck.”
Since 2001, 26 atomic-bomb-scale explosions have occurred in remote locations around the world, far from populated areas, made evident by a nuclear weapons test warning network. In a recent press release B612 Foundation CEO Ed Lu states:
“This network has detected 26 multi-kiloton explosions since 2001, all of which are due to asteroid impacts. It shows that asteroid impacts are NOT rare — but actually 3-10 times more common than we previously thought. The fact that none of these asteroid impacts shown in the video was detected in advance is proof that the only thing preventing a catastrophe from a ‘city-killer’ sized asteroid is blind luck. The goal of the B612 Sentinel mission is to find and track asteroids decades before they hit Earth, allowing us to easily deflect them.”
The Sentinel Space Telescope in orbit around the Sun. Image courtesy of Ball Aerospace.
The B612 Foundation is partnered with Ball Aerospace to build the Sentinel Infrared Space Telescope Mission. Once positioned in solar orbit closer to the Sun from Earth, Sentinel will look outwards in infrared to detect hundreds of thousands of as-yet unknown near-Earth objects over 140 meters in size. The privately-funded spacecraft is slated to launch in 2017-18 aboard a SpaceX Falcon 9 rocket.
In addition to Lu, Space Shuttle astronaut Tom Jones and Apollo 8 astronaut Bill Anders will be speaking at the event, titled “Saving the Earth by Keeping Big Asteroids Away.”
The event will be held at 6 p.m. PDT at the Museum of Flight in Seattle, WA. It is free to the public and the visualization will be made available online on the B612 Foundation website.
Aerial view of Nördlinger Ries crater in Germany, a formation so subtle it was not even known as an impact crater until the 1960s. Credit: Credit: Jesse Allen/NASA/GSFC/METI/ERSDAC/JAROS/ASTER
Could life thrive in the devastated rock left behind after a meteorite impact? A new study hints that possibly, that could be the case. Researchers discovered what they think are geological records of biological activity inside of Nördlinger Ries, a crater in Germany that is about 15 miles (24 kilometers) wide.
What the researchers say could be microbial trace fossils — specifically, tiny “tubular features” — were spotted inside the impact glass created after the meteorite impact melted the surrounding rock. These features are tiny — one-millionth to three-millionths of a meter in diameter — and were examined with spectroscopy and scanning electron microscopy to confirm the findings, the team stated.
“The simplest and most consistent explanation of the data is that biological activity played a role in the formation of the tubular textures in the Ries glasses, likely during post-impact hydrothermal activity,” stated post-doctoral fellow Haley Sapers, a post-doctoral scholar at the University of Western Ontario who led the research.
The researchers suggest that on other planets, looking in impact glass might be a good spot to search for tubular features such as the ones they found. The findings are peer-reviewed, but we’ll be interested to see what independent research teams make of the data collected.
The Zambezi River in Namibia floods the Caprivi plain in this picture captured from Sentinel-1A. The satellite was not only noted for its high resolution of the flood, but its ability to send the image quickly -- it was downloaded only two hours after it was acquired. Credit: European Space Agency
After dodging space debris and living to tell the tale, Sentinel-1A is now being put through its paces for its primary mission: to beam back pictures of the Earth as quickly as possible, to provide officials with the information they need during natural disasters or weather events.
The picture above gives a taste of what the European satellite will do when it’s fully commissioned. The picture of flooding in Namibia was downloaded only two hours after acquisition and then made available generally less than an hour after that, the European Space Agency said. Not only that, believe it or not — the view was socked in by cloud when the image was taken.
“Sentinel-1A’s ability to ‘see’ through cloud and rain and in pitch darkness make it particularly useful for monitoring floods and for offering images for emergency response,” the European Space Agency stated. “In fact, this area of the Caprivi plain was shrouded in thick cloud when the satellite acquired the image on 13 April.”
The satellite can also monitor long-term but serious weather events such as climate change, as the picture below of Pine Island Glacier shows.
The northern part of the Antarctic Peninsula as seen from Sentinel-1 on April 13, 2014. Credit: ESA
“As well as monitoring glaciers, Sentinel-1A is poised to generate timely maps of sea-ice conditions, particularly for the increasingly busy Arctic waters,” ESA stated. “Images from its advanced radar can be used to distinguish clearly between the thinner more navigable first-year ice and the hazardous, much thicker multiyear ice to help assure safe year-round navigation in polar waters.”
"Back on ISS, life is good," wrote NASA astronaut Steve Swanson on April 7, 2014 in the first Instagram from space. Swanson is wearing a T-shirt from the TV space show 'Firefly' that says "Shipping & Logistics: Everything's Shiny" around a smaller circle reading "Serenity: Est. 2459." Credit: NASA/Instagram
And now, time for some thrilling heroics. NASA astronaut Steve Swanson sent out the first Instagram from space last week wearing none other than a Firefly T-shirt. There’s something to be said about a space-faring guy evoking images of Captain Mal doing the impossible in the plucky Serenity spaceship, isn’t there?
We’re happy the epicness did not break NASA’s Instagram feed, as Swanson has been sending out pictures regularly since then showing the view from orbit (he joked about wanting a vacation at one point) as well as another selfie. You can check out the magic below, and follow the rest on NASA’s Instagram feed. We’ve copied and pasted Swanson’s captions below each image.
During Swanson’s first mission to space in 2007, STS-117, he brought with him the DVD set of Firefly and its movie spinoff, Serenity, and left it on the International Space Station library, according to collectSPACE.
Oh, and social media from space is also being covered on Twitter, via Expedition 39 NASA astronaut Rick Mastracchio and Koichi Wakata, from the Japan Aerospace Exploration Agency.
“The Turks and Caicos islands – I think I need to go there after this mission.” – Swanny #exp39 #earth #iss #international #space #station #nasa #vacation #earthrightnow
“Blood, sweat, but hopefully no tears.” – Swanny #nasa #iss #exp39 #international #space #station #blood #sweat #tears #medical
“Cape Canaveral – looking forward to when the US launches out of here again.” – Swanny #iss #exp39 #earth #florida #capecanaveral #international #space #station #launch #atlantic #coast #nasa
Rosetta's solar panels as seen by Philae's CIVA imaging system on April 14, 2014. Credit: ESA/Rosetta/Philae/CIVA
Philae is awake… and taking pictures! This image, acquired last night with the lander’s CIVA (Comet nucleus Infrared and Visible Analyzer) instrument, shows the left and right solar panels of ESA’s well-traveled Rosetta spacecraft, upon which the 100-kilogram Philae is mounted.
Philae successfully emerged from hibernation on March 28 via a wake-up call from ESA.
After over a decade of traveling across the inner Solar System, Rosetta and Philae are now in the home stretch of their ultimate mission: to orbit and achieve a soft landing on comet 67/P Churyumov-Gerasimenko. It will be the first time either feat has ever been attempted by a spacecraft. Read more here.
Did the Moon appear a little on crimson side to you last night? It’s not your imagination, but it was a fine textbook example of a total lunar eclipse. This was the first total lunar eclipse visible from the Earth since late 2011, and the first of four visible from the Americas over the next 18 months.
And although much of the U.S. and Canadian eastern seaboard was under cloud cover, those west of the Mississippi River were treated to a fine show. We were the lucky exception here at Astroguyz HQ just north of Tampa Bay in Florida, as the storm front held off juuusst long enough to witness the eclipse in its entirety.
We will admit, though, that there were some tense moments. A wave of thick clouds threatened to end our session altogether just moments before the onset of totality before finally abating. We shot stills, streamed video, made observations, and heck, just stepped back once in a while to stare at the ruby-tinged beauty that was totality.
And judging from the flurry of web traffic, the odd late Monday night/ early Tuesday morning timing for this eclipse did little to stem folks interest. We noted to Virtual Star Party co-host that the excitement was reminiscent to the early morning landing of Curiosity on the Red Planet.
Anyhow, here’s just a sampling of some of the great pics currently pouring in to Universe Today:
An eclipsed Moon+Spica. Credit: Henry Weiland of Honolulu, Hawaii
Visually, we’d place this morning’s eclipse between a Danjon value of 3 and 4, with a bright yellowish rim contrasting with a dark, coppery core near the center of the umbra. One astute viewer noted during the webcast that the eclipsed Moon took on a decidedly 3-D appearance, versus its usual flat look when nearing Full.
The eclipsed Moon, Mars and Spica. Credit: @Astrocolors
And speaking of Mars, we fielded lots of “what are those bright stars nearby?” questions as well. The bright blue-white star Spica and the planet Mars “photobombed” many eclipse images. Spica just missed being occulted by the Moon during the eclipse by less than two degrees, And Mars just passed opposition this week and was at its closest approach to the Earth for 2014 on the night of the eclipse.
Approaching totality as seen from Jacksonville, Florida. Credit: Richard Hay @WinObs.
As totality approached, shutter-speeds became longer as the red edge of the Moon became apparent. It always amazes me to think that the Earth casts that long red shadow back into the void of space every night, but its only during a lunar eclipse that you actually get to see it. We’re always told that the Earth is round, but during a lunar eclipse is one of the only times that you can really witness this curve, up close and personal.
A gathering of red objects, both celestial and terrestrial. Credit: AstroVal1, New York City.
This eclipse was placed reasonably high in the sky for Northern hemisphere viewers, though that also meant a lack of pics with foreground, except of course for creative shots like the one above. And with the explosion of digital imaging technology, its amazing what folks are doing to image eclipses, even using mobile phones:
We’ve come a long way since the days of film and doing back of the envelope calculations for afocal SLR photography of the Moon, that’s for sure. Unlike solar totality, lunar eclipses are a long at stately affair. In fact, totality during this eclipse lasted for one hour and 18 minutes, about 29 minutes short of the theoretical maximum. This morning’s eclipse won’t be topped in length until 2018.
A brick red Moon in eclipse. Credit: Rob Sparks.
This also marked our first attempts at adventures in live-streaming an eclipse both on UStream and G+, which was a blast. Thanks to co-hosts and saros chasers Scott Lewis, Fraser Cain, Thad Szabo and Katie Mack (@AstroKatie) for making the broadcast a success!
As of yet, there’s no images of the eclipse from space-based assets, though some may surface. Universe Today’s Elizabeth Howell noted that NASA engineers took precautions to protect the Lunar Reconnaissance Orbiter during the event: an extended lack of sunlight is a bad thing for solar-powered spacecraft. As of yet, there’s no word as to how the LADEE spacecraft also in orbit around the Moon fared, though its due to complete its mission and crash into the Moon this month.
The eclipsed Moon and Spica. Photo by Author.
And like the “Blue,” “Super” and “Mini” Moon, the Blood Moon meme is now — for better or worse — here to stay. We’ve already fielded multiple queries for media sources asking if the current tetrad of eclipses has any special significance, and the answer is no; I would still file your taxes on this April the 15th. Eclipses happen, as do wars, earthquakes and lost car keys… each and every year.
Approaching totality. Credit: John O’Connor, Fort Pierce, Florida.
Want more? There’s no word yet as to if anyone caught any of the more bizarre challenges during this eclipse, such as completing a triple saros exeligmos, catching an ISS transit, spotting a selenelion or catching a stellar occultation during the eclipse. If you did any of the above, let us know!
And finally, the biggest post-eclipse question on everyone’s mind is always: when’s the next one? Well, Australians only have to wait two weeks until a partial solar eclipse graces their continent on April 29th… and the next total lunar eclipse once again favors North America and the Pacific region on October 8th, 2014.
T’was a great kickoff this morning of eclipse season 1 of 2 for 2014!
Two 3-D replicas of a glove worn by European Space Agency astronaut Hans Schlegel. The one on right is lifesize and the other at one-tenth scale. The models were created "using fused deposition modelling of thermoplastic", ESA stated, at a mechanical workshop at the Netherlands' European Space Research and Technology Centre. Credit: ESA-Anneke Le Floc'h
Star Trek replicators, here we come. The European Space Agency has released a list of how 3-D printing could change space exploration forever. And lest you think this type of printing is far in the future, images like those disembodied hands above show you it’s come a long way. Those are 3-D replicas of a glove worn by European Space Agency astronaut Hans Schlegal.
The applications range from the small — making lighter valves, for example — to ambitious projects such as constructing a moon base. Below are some ESA images showing uses for 3-D printing, and if they’ve missed some, be sure to let us know in the comments.
Two valves — which is the 3-D printed one? It’s the one on the right. The original (left) is a water on-off valve (Woov) flown on the European Space Agency’s Columbus module on the International Space Station. The replica is 40 percent less massive. Credit: ESAArtist’s conception of a lunar dome based on 3-D printing. Credit: ESA/Foster + PartnersA 3-D printed showerhead injector that apparently saves on time in the normal manufacturing process: usually it takes “more than 100 separate welds to produce”, according to the European Space Agency. The holes, however, are made by secondary processing. Credit: ESAA closeup of a titanium lattice ball made using a 3-D printer. According to the European Space Agency, the hollow spheres have a “complex external geometry” that cannot be made with the usual manufacturing processes. Credit: ESA
An illustration showing how a sailboat mission to Titan might land and become operational. Copyright: Estevan Guzman for Universe Today.
The large moons orbiting the gas giants in our solar system have been getting increasing attention in recent years. Titan, Saturn’s largest moon, is the only natural satellite known to house a thick atmosphere. It’s surface, revealed in part by the Cassini probe, is sculpted by lakes and rivers. There is interest in exploring Titan further, but this is tricky from orbit because seeing through the thick atmosphere is difficult. Flying on Titan has been discussed around the web (sometimes glibly), and this was even one of the subjects treated by the immensely popular comic, XKCD.
However, there remains the problem of powering propulsion. The power requirements for flight are quite minimal on Titan, so solar wings might work. But Titan also presents an alternative: sailing.
Images from the Cassini mission show river networks draining into lakes in Titans north polar region. Credit: NASA/JPL/USGS.
With all those lakes and rivers, exploring Titan with a surface ship might be a great way to see much of the moon. The vehicle wouldn’t be sailing on water, though. The lakes on Titan are composed of liquid methane. The challenge is therefore making the vessel buoyant: liquid methane is only 45% as dense as liquid water. This means we would need a lot of displacement. A deep, hollow hull could do this, however, and it turns out that the liquid methane has an advantage that helps make up for the low density: it is much less viscous than water.
Reynolds number is proportional to the ratio of density to viscosity, and it turns out that friction drag on a hull is inversely proportional to Re. While Titan’s seas and lakes have only 45% the density of water, they also have only 8% of the viscosity. This means that the Titan sailing vessel would only experience about 26% of the friction drag as its Earth equivalent. [Yacht designers have found that the friction drag is about equal to 0.075/(log(Re)-2)^2)]. That leaves us room to make the hull deeper (important to compensate for the density as above), and longer (if we want a longer waterline, which will make the bow waves longer and improve maximum speed).
The sail itself would get less wind, on average, on Titan than Earth. Average wind speeds on Titan seem to be about 3 meters/s, according to Cassini, though it might be higher over the lakes. Average wind speed over Earth oceans is closer to 6.6 meters/s. But, the Titan atmosphere is also about 4x denser than Earth’s, and both lift and drag are proportional to fluid density. All told, this means that the total fluid force on the sail will be about 83% of what you’d get on Earth, all else being equal, which could be sufficient. There would be a premium on sail efficiency and size, and so we might have to take advantage of the low-friction hull to examine shapes with more stability that can house a larger, taller (and presumably high aspect ratio) sail.
This is all quite speculative, of course, but it provides a fun exercise and perhaps provides inspiration as we imagine tall-sailed robotic vessels silently cruising the lakes of Titan.
But with all the recent discoveries on Titan by the Cassini spacecraft — things like lakes, seas, rivers and weather and climate patterns that create both fog and rain — a mission like this will be given more consideration in the future.
