A comet the size of a small mountain and about as solid as a pile of talcum powder whizzed past Mars.
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 →
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 →
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 →
It's the most shocking space news of the 21st century -- literally! Continue reading →
The first-ever photos of water ice near Mercury's north pole have come down to Earth, and they have quite a story to tell.
Saturn's small moon Mimas may have its own subsurface ocean according to some strange measurements made by Cassini.
+ Load More