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New study suggests violent origin for Mars’ moons
It was thought Mars' 2 small moons - Phobos and Deimos - might be captured asteroids. But new work suggests a violent birth for the moons during a colossal impact.
April 19, 2018
TESS planet hunter on its way
"It’s the beginning of a new era of exoplanet research."
April 19, 2018
Exoplanets: Worlds orbiting distant stars
Humans have been speculating about their existence for thousands of years, but ours is the 1st generation to know, with certainty, that exoplanets are really out there.
April 19, 2018
See it! Moon sweeps past Venus
Wonderful photos from the EarthSky community of the moon's sweep this week past the brightest planet, Venus.
April 18, 2018
Was another civilization on Earth before humans?
How do we know earlier industrial civilizations on Earth didn't rise and fall long before humans appeared? That's the question posed in a new scientific thought experiment.
April 18, 2018
March 2018 in top 6 warmest on record
Last month wasn't as hot as March 2016 or March 2017, but it's in the warmest 6 since modern record-keeping began in 1880.
April 18, 2018
Green moon on April 20, 2018? Nah
For weeks, people have searched for this post more than any other at EarthSky. No, there won't be a green moon on April 20, 2018. It's a joke, y'all, with its roots (ahem) in cannabis culture. :-)
April 18, 2018
April snow in Georgia
Scott Kuhn captured this image after a rare April snow in northern Georgia.
April 18, 2018
The search for the sun’s lost siblings
Our sun's sibling stars could be scattered across the sky. Astronomers are sifting through newly released data in the GALAH Survey - a galactic archaeology survey - hoping to find them.
April 17, 2018
Underwater noise pollution stresses aquatic animals
The roar of motors, ping of military sonar, bangs and blasts from offshore development are distracting, confusing, and even killing, aquatic animals.
April 17, 2018
