Jupiter and Venus are low in the east before sunup now, but they're our sky's 2 brightest planets. You'll need an unobstructed horizon to see this beautiful morning scene.
Future space missions won't be able to carry all their building materials from Earth. Competitors are challenged to fabricate habitats using indigenous materials. $2 million prize!
This star has a spiral disk of dust around it. Processes in the inner disk - winds, or swirls or clashes of pebbles - seem to be casting shadows on the outer disk.
Spectacular Venus-Jupiter conjunction on Monday! These are the 2 brightest planets, and they'll be less than a moon-width apart. If you do miss them on Monday, keep watching. The moon is about to sweep past them.
We published a photo last Tuesday, showing a mountain's shadow. We wondered what caused it. Now - with the help of the EarthSky community - the mystery may be solved.