Scientists have found two families of comets in the developing Beta Pictoris star system, located about 64 million light-years from Earth, including one group that appears to be remnants of a smashed-up protoplanet.
A comet the size of a small mountain and about as solid as a pile of talcum powder whizzed past Mars.
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.
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 →
If you step outside before dawn during the next week or so, you might be able to see bright meteors streaking through the sky.
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 →
The European Space Agency's Rosetta spacecraft has sent home several spectacular images that show a large pyramid-shaped boulder studding the surface of its target comet.
At a distance of only 10 miles from comet 67P/Churyumov-Gerasimenko's surface, the European Rosetta mission has captured yet another dazzling self portrait with the dark comet lurking in the background. Continue reading →
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