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Posts by
Editors of EarthSky
Dark for 2 years after dino-killing asteroid?
Can you imagine a sky so laden with soot that all of Earth stayed dark for 2 years? New research suggests it happened, at the end of the age of the dinosaurs.
August 31, 2017
NASA’s plans for August 21 eclipse
Not traveling to the centerline of the eclipse? Expect NASA images via 11 spacecraft, at least 3 aircraft, more than 50 high-altitude balloons, and the International Space Station.
June 26, 2017
How hard did it rain on Mars?
In a new study, geologists show there was rainfall on Mars in the past – and that it was heavy enough to carve out many of the features we see today on the planet’s surface.
June 6, 2017
Saturn’s moon may have tipped over
Scientists used Cassini spacecraft images to show that Saturn's moon Enceladus may have tipped away from its original spin axis by 55 degrees - more than halfway toward rolling completely onto its side.
June 4, 2017
NASA camera views sunglint from Earth
You'd expect sunglint from an ocean or other body of water. But the camera caught some glints over land as well. A new NASA video explains how scientists solved the mystery.
May 17, 2017
Why birds smash into windows
Up to 1 billion birds die each year in the U.S. due to collisions with windows. Why do birds slam into windows, and what can you do to prevent it?
April 28, 2017
Cassini to begin its Grand Finale
The glorious Cassini spacecraft - now nearly out of fuel - will make the 1st in a daring series of dives through the gap between Saturn and its rings on April 26.
April 21, 2017
Extend Big Dipper’s handle to Spica
Use the Big Dipper to arc to the star Arcturus. Then drive a spike to the star Spica on these springtime evenings!
April 1, 2017
Find Mizar and Alcor in the Big Dipper
Early stargazers used this pair of stars as a vision test.
March 7, 2017
