A waxing gibbous moon and brilliant Jupiter will pair up after sunset on Feb. 26.

"We can study a diverse population of supermassive black holes and their radio jets at different stages of their evolution." ...

Water ice on Mars, bubbling gas on a distant star, a snow-covered island, and a pre-planetary nebula are featured this week. Plus, a look back at an image of Mars taken by the Dawn spacecraft during a ...