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Astronomers may have spotted the first exomoon!
If it's true this distant planet has a moon, the moon would weigh less than Earth, and the planet would be more massive than Jupiter.
April 10, 2014
Cataclysmic asteroid impact some 3.26 billion years ago
Scientists have reconstructed a collision between the early Earth and an asteroid. It dwarfed the event that caused dinosaurs to go extinct 65 million years ago.
April 9, 2014
Star aligns with planetary nebula to create diamond ring
It looks like the diamond ring effect seen during total solar eclipses. It's really a distant, dying star and its shell of gas, with another star in front of it.
April 9, 2014
Astronomers make most precise measurement yet of expanding universe
A new analysis says that 10.8 billion years ago, the universe was expanding by one percent every 44 million years.
April 7, 2014
Ride along with a rocket to space
What a ride! Cameras mounted on the upper stage of a Soyuz rocket on April 3, 2014 looked earthward during a satellite launch.
April 7, 2014
Biggest galaxy cluster bigger than thought
El Gordo - the largest galaxy cluster in the universe - is about 3 million billion times more massive than our sun, roughly 43 percent more massive than earlier estimates.
April 4, 2014
Hidden ocean discovered on Saturn’s moon Enceladus
A large ocean under Enceladus' icy surface supplies the water that's been seen spraying out of the "tiger stripes" on its surface, suggests new research.
April 3, 2014
Mercury has a long history of exploding volcanoes
Throughout extended periods of its history, the surface of planet Mercury crackled with volcanic explosions, a new analysis suggests.
April 3, 2014
Mid-level solar flare April 2
Awesome image! A mid-level flare, an M6.5, erupted from the sun on April 2, 2014, peaking at 10:05 a.m. EDT.
April 2, 2014
New image: Two contrasting galaxies
A new image shows two galaxies, close to each other in space, but with very different histories - small spiral NGC 1317 and the large battle-scarred NGC 1316.
April 2, 2014
