If you’re a frequent reader of Universe Today you know that, despite the end of the Shuttle program and the constant battle for a piece of the federal budget, NASA has a lot on their plate for future space exploration missions. But there are still a lot of people among the general public who think that the U.S. space administration is “dead,” or, at the very least, in the process of dying. Which is unfortunate because there’s actually a lot going on, both in space and in development on the ground.
The video above, released Monday by Johnson Space Center, shows highlights from 2013 as well as some of the many things NASA has in progress. As anyone can see, rumors of its death have been greatly exaggerated! (By whom I’m still not quite sure.)
2013 has been quite the year in space and astronomy! There have been launches, new missions, new discoveries and surprises. Here’s a look back at the big news from the past year, and since we never can limit ourselves to just a “Top 10” here are the “Top 12” stories we’ve featured on Universe Today in 2013, as chosen by our staff:
12. Juno Flyby
During a crucial speed boosting slingshot maneuver around Earth on Oct. 9, 2013 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. However, an unexpected glitch during the “do or die” fly-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. But five days later engineers finally recouped Juno and it’s been smooth sailing ever since.
“Juno is fully operational and on its way to Jupiter,” Juno principal investigator Scott Bolton told Universe Today’s Ken Kremer. “We are completely out of safe mode!”
Due to budgetary disagreements in Congress, the United States federal government began a shutdown on Oct. 1, 2013 that affected all government agencies and an untold number of government contractors. During the shutdown, which lasted for 16 days, about 97% of NASA’s 18,000 employees were off the job. NASA’s websites were pulled, all the NASA-associated Twitter, Facebook, Google Plus and other social media accounts went dark and NASA Television has also ceased broadcasting.
Thankfully, NASA’s MAVEN Mars orbiter was granted ‘emergency exemption’ to resume processing for its launch, (otherwise, the launch may have been delayed for two years) and the mission launched successfully on Nov. 18.
Read more about the government shutdown here and here.
10. Cassini Takes a Picture of Earth from Saturn’s orbit:
This summer, for the first time ever, the world was informed that its picture was going to be taken from nearly a billion miles away as the Cassini spacecraft captured images of Saturn in eclipse on July 19. On that day we were asked to take a moment and smile and wave at Saturn, from wherever we were, because the faint light from our planet would be captured by Cassini’s camera, shielded by Saturn from the harsh glare of the Sun.
This was no simple point-and-click. Over 320 images were captured by Cassini on July 19 over a period of four hours, and this mosaic was assembled from 141 of those images. Because the spacecraft, Saturn, and its moons were all in constant motion during that time, affecting not only positions but also levels of illumination, imaging specialists had to adjust for that to create the single image you see above. So while all elements may not be precisely where they were at the same moment in time, the final result is no less stunning.
China scored success with the successful touchdown of the ambitious Chang’e-3 probe with the ‘Yutu’ rover on the surface of the Moon on Dec. 14, 2013. This was China’s first ever attempt to conduct a landing on another planetary body, and was the first landing on the Moon by any entity in nearly four decades.
In November, India’s first ever Mars probe Mars Orbiter Mission (MOM) blasted from Earth for a rendezvous with the Red Planet on September 24, 2014 – where it will study the atmosphere and sniff for signals of methane. Read more here.
7. NASA launches Missions to Mars and the Moon: MAVEN, LADEE
NASA’s Mars Atmosphere and Volatile Evolution (MAVEN) space probe thundered to space on Nov. 18 from Cape Canaveral Air Force Station’s Space Launch Complex 41 on an Atlas V rocket. MAVEN’s purpose is to answer key questions about the evolution of Mars, its geology and the potential for the evolution of life.
“MAVEN is an astrobiology mission,” says Bruce Jakosky, MAVEN’s Principal Investigator.
Read more about MAVEN’s launch here.
6. Europa has Water Plumes
It’s been known since 2005 that Saturn’s moon Enceladus has geysers spewing ice and dust. Now, thanks to the Hubble Space Telescope we know of another moon with similar jets: Europa, the ever-enigmatic ice-shelled moon of Jupiter. This makes two places in our Solar System where subsurface oceans could be getting sprayed directly into space — and within easy reach of any passing spacecraft.
We were given the sad news in May that NASA’s exoplanet-hunting Kepler telescope had lost its ability to precisely point toward stars, due to two of four reaction wheels failing, putting its exoplanet search in jeopardy.
4. Curiosity and Opportunity rovers discover habitable zones
This year, NASA’s Curiosity rover discovered evidence that an ancient Martian lake had the right chemical ingredients that could have sustained microbial life forms for long periods of time – and that these habitable conditions persisted on the Red Planet until a more recent epoch than previously thought. Additionally, researchers have developed a novel technique allowing Curiosity to accurately date Martian rocks for the first time ever – rather than having to rely on educated guesses based on counting craters.
Meanwhile, the venerable Opportunity rover, going on nearly a decade of roving on Mars, spotted deep stacks of ancient rocks transformed by flowing liquid water eons ago.
In a cosmically historic announcement on September 12, 2013, NASA said the most distant human made object — the Voyager 1 spacecraft — is in interstellar space, the space between the stars. It actually made the transition about a year ago.
While there is a bit of an argument on the semantics of whether Voyager 1 is still inside or outside of our Solar System (it is not farther out than the Oort Cloud — it will take 300 more years reach the Oort cloud and the spacecraft is closer to our Sun than any other star) the plasma environment Voyager 1 now travels through has definitely changed from what comes from our Sun to the plasma that is present in the space between stars.
2. Comet Mayhem: ISON’s dusty end and Lovejoy’s surprise
Just as anticipated, on Friday, Feb. 15, asteroid 2012 DA14 passed us by, zipping 27,000 kilometers (17,000 miles) above Earth’s surface — well within the ring of geostationary weather and communications satellites that ring our world.
But before that close pass occurred, there was a completely unexpected appearance of a remarkably large meteor in the skies over Chelyabinsk, Russia on the morning of the same day, surprising scientists and causing damage and injuries to the unsuspecting residents of the city. While this event provided insight and information about what happens when an asteroid intersects with Earth, it also highlighted the need for continued research of near-Earth objects (NEOs) — since there are plenty more out there where these came from.
That’s it for 2013, and here’s to more great stories in 2014! We’ll continue to do our best to provide coverage on everything space and astronomy-related in the year to come, and thanks to all our readers for your continued support and comments. Also, I want to extend my thanks to our excellent staff of writers who contributed news articles this past year: Jason Major, Elizabeth Howell, Ken Kremer, David Dickinson, Bob King, Tammy Plotner, Shannon Hall, Daniel Majaess, Markus Pössel, Markus Hammonds, Ray Sanders, Scott Lewis, Matthew Francis, John Williams, Susan Murph and Brian Koberlein. Special thanks to our amazing publisher Fraser Cain for his leadership and support (and his great new video series this year!)
Do you live in the southern hemisphere? Are you tired of all those views of the Moon that favor celestial north as up? Well here’s a video just for you from the good folks at the GSFC Scientific Visualization Center — it shows the full 2013 year of lunar phases and libration as seen from Earth’s southern half using data gathered by NASA’s Lunar Reconnaissance Orbiter. (Because what’s so great about north, anyway?)
Each frame represents one hour. Side graphs indicate the Moon’s orbit position, sub-Earth and subsolar points, and distance from the Earth at true scale. Awesome! Um, I mean… bonzer!
And what’s up with all that wobbling around? Find out more below:
The Moon always keeps the same face to us, but not exactly the same face. Because of the tilt and shape of its orbit, we see the Moon from slightly different angles over the course of a month. When a month is compressed into 24 seconds, as it is in this animation, our changing view of the Moon makes it look like it’s wobbling. This wobble is called libration.
The word comes from the Latin for “balance scale” and refers to the way such a scale tips up and down on alternating sides.
The Moon is subject to other motions as well. It appears to roll back and forth around the sub-Earth point (the location on the Moon’s surface where the Earth appears directly overhead, at the zenith.) The roll angle is given by the position angle of the axis, which is the angle of the Moon’s north pole relative to celestial north. The Moon also approaches and recedes from us, appearing to grow and shrink. The two extremes, called perigee (near) and apogee (far), differ by more than 10%.
Read more and see the current phase of the Moon (bottom up) on the GSFC Dial-a-Moon page here.