From a silhouetted space station to glowing comet tails and swirling stars, this year's ZWO Astronomy Photographer of the Year contest inspires us to see the cosmos in a new light ...

Pioneering space scientist Charles "Chuck" Sonett, the first head of the University of Arizona's department of planetary sciences, has died. He was 87.

NASA released the closest-ever images of the sun’s atmosphere. CNN’s Jackie Wattles explains what scientists could learn from ...