Category Archives: Mars
If you’re a heavy metal fan then you’ll love this: this shiny, lumpy rock spotted by NASA’s Curiosity rover is made mostly of iron — and came from outer space! Dubbed “Lebanon” it’s a stony iron meteorite, similar to ones found in years past by the Spirit and Opportunity rovers, but is considerably larger than any of the ones they came across. In fact, at 2 meters (6.5 feet) wide, Lebanon is the biggest meteorite ever discovered on Mars!
Sol 669 is here (well, there… on Mars that is…) and that marks the one full year anniversary of Curiosity’s mission exploring Gale Crater! Wait, you say, didn’t Curiosity land on Mars in August of 2012? Shouldn’t we still be approaching the TWO-year anniversary of the MSL mission? Well, yes, here on Earth, but on Mars a year is 1.8808 Earth-years long — that’s 686.9 Earth days to a single Martian year! So from landing day August 5 (August 6 UTC) 2012, 686.9 days Earth days (i.e., one Martian year) later is June 24, 2014 (which it is at the time of this writing, UTC) and thus:
Happy Mars Anniversary, Curiosity!
NASA’s Curiosity rover may be busy exploring the rugged and rocky interior of Gale Crater but it does get a chance to skygaze on occasion. And while looking at the Sun on June 3, 2014 (mission Sol 649) the rover’s Mastcam spotted another member of our Solar System: tiny Mercury, flitting across the Sun’s face.
Silhouetted against the bright disk of the Sun, Mercury barely appears as a hazy blur in the filtered Mastcam image above. But it was moving relatively quickly during the transit and passed the darker smudges of two Earth-sized sunspots over the course of several hours. It was the first time Mercury has ever been imaged from Mars, and also the first time we’ve observed a planet transiting our Sun from another world besides our own.
Read the rest of my article (and watch a cool animation of the transit) on Universe Today here.
Image credit: NASA/JPL-Caltech/MSSS/Texas A&M
What were you doing on Sunday night? Whatever it was (and by the way I do hope it was watching Cosmos) about the same time, 59.5 million miles away, NASA’s Curiosity rover was taking her picture on Mars inside Gale Crater! Here’s Curiosity’s latest “selfie,” a mosaic I assembled from about a dozen images acquired with the Mars Hand Lens Imager (MAHLI) instrument on April 27-28, 2014 (Sol 613). Along with Curiosity’s “grinning” face there on the left you can see the 3.5-mile-high Mount Sharp (aka Aeolis Mons) rising in the background.
Doesn’t she look adorable (if a bit dusty)?
Putting this together wasn’t an exact science, so there are plenty of discrepancies where the separate images line up. But that’s okay — the overall effect came out pretty nicely and I’m happy with it. It still a robot on another planet, after all! And until there’s people walking around on Mars, I can’t think of anything cooler than that.
And what details! This image, acquired by the HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter on Jan. 24, 2014, shows rippled dunes in Mars’ southern hemisphere, coated with a fall dusting of seasonal carbon dioxide frost. With the Sun just five degrees above the horizon, the surface detail captured by HiRISE is simply exquisite.
Be sure to click the image for a high-resolution version.
The original image resolution is just over 50 cm per pixel, so details about 151 cm (5 feet) wide are resolved. See the full image area here, and view the original post on the University of Arizona’s HiRISE site here.
MRO launched on August 12, 2005, and has been in orbit around Mars since March 2006. It is currently in its second Extended Mission exploring the surface of Mars.
If you count at least slightly over two years old as “brand new” then yes, this one is certainly that!
Seen above in an image taken by the HiRISE camera aboard NASA’s Mars Reconnaissance Orbiter on Nov. 19, 2013, a 100-foot-wide (30-meter) crater is surrounded by bright rays of ejected material and blown-clear surface. Since HiRISE calibrates color to surface textures, the less-dusty cleared surface at the crater site appears blue. (See a true-color calibrated scan here.)
By narrowing down when this particular spot was last seen to be crater-free, scientists have determined that the impact event that caused this occurred between July 2010 and May 2012.
Ejected material from this cratering event was thrown outward over 9 miles (15 km). It’s estimated that impacts producing craters at least 12.8 feet (3.9 meters) in diameter occur on Mars at a rate of over 200 per year.
What a year for space exploration! With 2013 coming to a close I thought I would look back on some of the biggest news in space that I’ve featured here on Lights in the Dark. Rather than a “top ten” list, as is common with these year-end reviews, I’m going to do more of a month-by-month (hence the 12) to help recollect some of the amazing stories and sights that 2013 has brought us. And with some of the big headliners we’ve seen this year it’s easy to lose sight of the smaller (but no less fascinating) discoveries — so I’ll be sure to include some of those too. After all, when it comes to learning about the Universe there’s no “little” news!
Ready? Let’s go!