What are planetary atmospheres made of? Figuring out the answer to that question is a big step on the road…
While the SuperMoon of earlier this week got a lot of attention -- and rightly so, given the Moon was…
Talk of aurora is in the air. Our earlier story today by Elizabeth Howell alerted you to the possibility of…
Here's a solar flare with a little flair added! Astrophotographer Rick Ellis from Toronto, Canada created this "artsy" Sun by…
Our hothouse planet of the solar system, Venus, is possibly a product of how close it is to the Sun,…
Massive stars end their lives dramatically. Once the nuclear fuel deep within their cores is spent, there's no longer any…
Bim, bam, smash! The Sun hurled two clouds of particles in our general direction, putting space weather watchers on alert.…
Wow! See that bright streak in the photo above? That's a shot of the Expedition 40 crew making a flawless…
This new picture of M54 -- a part of a satellite galaxy to the Milky Way called the Sagittarius Dwarf…
Spacecraft "selfies" are always a treat and this one is doubly awesome: taken by the Philae lander piggybacked onto ESA's…