
NASA’s Solar Dynamics Observatory image of Oct. 8, 2014, looks a little like a Jack-o-lantern.

Like a drop of dew hanging on a leaf, Tethys appears to be stuck to the A and F rings…

NASA’s Dryden Flight Research Center, Edwards, CA, used an F-18 Hornet fighter aircraft as its High Angle-of-Attack (Alpha) Research Vehicle…

This artist’s concept depicts the early Martian environment – believed to contain liquid water and a thicker atmosphere – versus…

This artist’s concept depicts the early Martian environment (left) – believed to contain liquid water and a thicker atmosphere –…