Comets
Comet K1 PanSTARRS: See It Now Before it Heads South
Comet C/2012 K1 PanSTARRS, one of the most dependable comets of 2014, may put on its encore performance over the…
Rosetta’s 67P Comet Compared to Everything, Including the Death Star
We've seen a bunch of pictures comparing Comet 67P/Churyumov–Gerasimenko with all kinds of cities and objects on Earth, but it's…
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Why Watch ESA Rosetta’s Movie ‘Ambition’? Because We Want to Know What is Possible
NASA has taken on space missions that have taken years to reach their destination; they have more than a dozen…
Comet Siding Spring Was Bleeding Hydrogen As It Sped By Mars
As Comet Siding Spring passed close by Mars on Sunday (Oct. 19), NASA's newest Mars spacecraft took a time-out from…
Stinky! Rosetta’s Comet Smells Like Rotten Eggs And Ammonia
While you can't smell in space -- there is no medium to carry the molecules, the same reason you can't…
Rosetta’s Comet Springs Spectacular Leaks As It Gets Closer To The Sun
Jet! The comet that the Rosetta spacecraft is visiting is shedding more dust as machine and Solar System body get…
MRO Spies Tiny, Bright Nucleus During Comet Flyby of Mars
Not to be outdone by the feisty Opportunity Rover, the HiRISE camera on NASA's Mars Reconnaissance Orbiter (MRO) turned in…
Opportunity Rover Spots Comet Siding Spring from the Surface of Mars!
It looks like NASA's hard-working Opportunity Rover nabbed our very first pictures of a comet seen from another world! A…
How Rosetta Will Send Philae Lander To Comet’s Surface (Plus, Landing Site Contest!)
The Philae spacecraft has a tough job ahead of it on November 12: it is slated to make the first…
Astrophotographers Capture Dramatic Photos of Comet Siding Spring Approaching Mars
Astrophotographer Damian Peach shares this spectacular image of comet C/2013 A1 Siding Spring approaching Mars taken just hours ago. The faint comet…