05 June 2013, 04:29 PM ET
The sun was "feisty" in its youth.
05 June 2013, 04:16 PM ET
The Milky Way is going through a stellar baby boom.
05 June 2013, 11:32 AM ET
The new observations allow astronomers to map out the consequences of big stellar blasts.
05 June 2013, 11:12 AM ET
Using one of two donated spy telescopes would improve NASA's WFIRST mission, a report concludes.
05 June 2013, 10:45 AM ET
A hot gas giant circling a sun-like star has a 7.8 day year.
05 June 2013, 10:13 AM ET
Some exoplanets found by a planet-hunting telescope are larger than scientists expected.
05 June 2013, 09:06 AM ET
This stunning space wallpaper shows a patchwork network of frozen ridges and troughs that cover the face of Enceladus, Saturn’s most enigmatic of icy moons.
04 June 2013, 02:30 PM ET
They may also serve as bridges to the future.
04 June 2013, 09:30 AM ET
The models that predict the behavior of the early universe may also predict a multiverse beyond.
04 June 2013, 09:23 AM ET
Stars should be at least 8.7 percent as wide as our own sun, researchers say.
04 June 2013, 09:04 AM ET
NASA's Fermi telescope has seen a possible signal of dark matter, but more data is needed.
04 June 2013, 08:55 AM ET
A star smaller than Jupiter regularly fires off flares as powerful as the biggest eruptions from our sun.
03 June 2013, 05:11 PM ET
Astronomers are witnessing a cosmic death on a galactic scale
03 June 2013, 05:04 PM ET
The solar system lies in what's called the "Local Arm" of the Milky Way.
03 June 2013, 04:54 PM ET
P/2010 A2's dust tail stretches nearly three times the distance from the Earth to the moon.
03 June 2013, 04:48 PM ET
The purported Red Planet rodent even has its own Twitter account.
03 June 2013, 01:46 PM ET
The planet could be the least massive planet observed outside of the solar system.
03 June 2013, 09:39 AM ET
The bright spot located at the edge of the bluish fan-shaped structure in this cool space wallpaper is a young star called V* PV Cephei, or PV Cep.
31 May 2013, 05:06 PM ET
SpaceX Senior Engineer Garrett Reisman (former NASA Shuttle astronaut) is helping to get the U.S. back into the manned spaceflight business. He is tasked with retrofitting the SpaceX rocket/capsule to carry humans.
31 May 2013, 02:56 PM ET
Is it a rat? Or is it a rock? (It's a rock.)
30 May 2013, 06:47 PM ET
Comet ISON already sports a tail, though it's still far from the sun.
30 May 2013, 06:38 PM ET
Astronomers used data from NASA's Grail probes to study gravitational anomalies on the moon.
30 May 2013, 06:06 PM ET
The pebbles seen by the Curiosity rover provide more evidence that water once flowed on Mars.
30 May 2013, 05:51 PM ET
Being aboard a manned mission to Mars may expose astronauts to dangerously high levels of radiation that could elevate their lifetime risk of developing cancer.
30 May 2013, 05:41 PM ET
Stars that have less salt in their compositions live longer lives, a new study shows.