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This Just In
Oct 20, 2014 08:50 PM ET // Ian O'Neill
The HiRISE camera on board NASA's Mars Reconnaissance Orbiter (MRO) has become the first instrument orbiting Mars to beam back images of comet Siding Spring's nucleus and coma. Continue reading →
Oct 20, 2014 04:40 PM ET // Joe Rao, SPACE.com Skywatching Columnist
If you step outside before dawn during the next week or so, you might be able to see bright meteors streaking through the sky.
Oct 20, 2014 11:35 AM ET // Ian O'Neill
As comet Siding Spring speeds away after its Martian encounter on Sunday, our armada of satellites have reported in to signal that they are OK.
Oct 20, 2014 09:30 AM ET // AFP
A comet the size of a small mountain and about as solid as a pile of talcum powder whizzed past Mars.
Oct 20, 2014 07:00 AM ET // Irene Klotz
Astronomers using the Hubble Space Telescope have located at least one and possibly three Kuiper Belt objects that NASA’s New Horizons spacecraft can reach after its flyby Pluto next year. Continue reading →
Oct 19, 2014 10:32 PM ET // Ian O'Neill
As we await a close-up view of comet Siding Spring making its closest approach with Mars, astronomers on Earth have been busy doing some of their own comet spotting from afar. Continue reading →
Oct 17, 2014 02:25 PM ET // Irene Klotz
Hurricane Gonzalo is delaying launch of NASA's next cargo ship to the orbital outpost. Continue reading →
Oct 17, 2014 02:05 PM ET // Ian O'Neill
Comet Siding Spring will make a heart-stopping close flyby of the Red Planet in Sunday, giving our Martian armada of robotic explorers a ring-side view of the spectacle. Continue reading →
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