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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
Mars opposition happens this month: It’s really easy to see
Earth and Mars are converging for a beautiful close encounter in April, an event astronomers call "the opposition of Mars."
April 2, 2014
Aurora alert for April 1 and 2
The first of three sets of solar particles are now en route to Earth and are expected to deliver glancing blows to Earth beginning April 1 and into April 2.
April 1, 2014
