A new three dimensional model of the Cassiopeia A supernova remnant provides insights into how these massive explosions occur.
A recent asteroid flyby might freak some of us out a little bit, even though it was no danger to Earth. It turns out that kind of thing happens all the time.
Ceres is an embryonic planet that had the misfortune of seeing Jupiter crush its dreams of becoming a legit planet on its own. But the more scientists learn about the plucky dwarf, the more they like it.
On Friday night, observers all across North America will witness a rare event (weather permitting).
Scientists are finding more evidence of a galactic 'skeleton' lurking inside the appendages of the Milky Way, and studying these massive 'bones' could help researchers get a better idea of what our galaxy looks like from the outside.
NASA astronaut Terry Virts managed to photograph Comet Lovejoy from orbit.
Jan. 19, 2015, was a red letter day for NASA's Solar Dynamics Observatory -- one of its instruments, having continually stared at the sun for 5 years, captured its 100 millionth observation of our nearest star.
With the Quadrantid meteor shower, timing is everything.
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