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New record for farthest galaxy cluster
A new record for the most distant galaxy cluster has been set. Astronomers say the cluster, 11.1 billion light-years away, might have been caught right after birth.
September 1, 2016
No alien signal, says SETI astronomer
A strong signal from a sunlike star sparked speculation this week that we might - at last - have heard from an alien civilization. Now astronomers say ... no.
August 31, 2016
Will Planet 9 spell doom for solar system?
No, not Nibiru. Theoretical astronomers describe how a hypothetical Planet 9 could hurtle Jupiter into interstellar space when the sun dies, billions of years from now.
August 31, 2016
Watch spacewalk live September 1
NASA TV will broadcast live coverage on Thursday of a 6.5-hour spacewalk by 2 astronauts aboard ISS. Coverage will start at 6:30 a.m. EDT (1030 UTC). The spacewalk will begin about 8 a.m. EDT (1200 UTC).
August 31, 2016
A galaxy made of 99.9% dark matter
Although it's relatively nearby, Dragonfly 44 was missed for decades by astronomers because it's very dim. But there's more to this galaxy than meets the eye.
August 30, 2016
Hours after discovery, asteroid swept by
Asteroid 2016 QA2 was twice as big as the space rock that entered over Russia in 2013, breaking windows in 6 Russian cities. It passed safely Saturday night.
August 28, 2016
Success for Juno’s 1st Jupiter flyby
Juno spacecraft arrived at Jupiter on July 4 and has spent some weeks in a testing mode. On Saturday, it came closer to Jupiter than any spacecraft ever has.
August 28, 2016
Your cosmic suntan
Lie on the beach, and your body is bombarded by light from our sun, and from beyond our galaxy.
August 28, 2016
Juno soars closest to Jupiter August 27
The Juno spacecraft will be about 2,500 miles (4,200 km) above Jupiter's swirling clouds. No other spacecraft has ever orbited Jupiter this closely.
August 27, 2016
Watch SpaceX Dragon depart ISS Friday
Live coverage Friday of cargo ship's departure from International Space Station. Begins at 5:45 a.m. EDT (9:45 UTC).
August 25, 2016
