Don’t miss moon, Venus, Jupiter at dawn

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.

Citizen inventors: NASA’s 3D Printed Habitat Challenge

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!

Scientists find teeth of early human ancestor

A remarkable find of fossil teeth from tiny, furry-tailed creatures - thought by scientists to be a human ancestor - dating back 145 million years.

Moon sliding past 3 planets this week

The planets are Mars, Jupiter and Venus. The moon will move past them all in the coming mornings. Look east!

Will 15 days of darkness start November 15? Nah

Are you ready for 15 days of darkness, November 15-30? No need to be. It's a hoax.

Moving shadows around a planet-forming star

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.

When mammals switched from nights to days

Mammals once were night creatures. A new study suggests they became active in daylight after the dinosaurs went extinct, 66 million years ago.

Don’t miss Jupiter and Venus at dawn!

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.

Cloud shadow mystery … solved?

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.

Venus-Jupiter conjunction Monday a.m.

Watch for the super-close pairing of the sky's 2 brightest planets, Venus and Jupiter. They'll be in the sunrise direction, low in the east at dawn.