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.
Scientists 1st observed gravitational waves from merging black holes. Now they're targeting a different gravitational wave signal: a long continuous waveform from a rapidly spinning neutron star.
2018 GE3 swept by at half the moon's distance Sunday, just hours after being detected. Its size is 3 to 6 times that of the space rock that penetrated the skies over Chelyabinsk, Russia, in 2013.
"Binary black holes are basically like giant targets hanging out in a globular star cluster, and as you throw other black holes or stars at them, they undergo these crazy chaotic encounters."
TESS will launch on a SpaceX Falcon 9 rocket from Cape Canaveral Air Force Station in Florida. Lift-off is planned for no earlier than 6:32 p.m. EDT (10:32 p.m. UTC).
See what scientists saw this week at a meeting in Vienna. It's a 3-D fly-around of Jupiter's north pole, showing its central cyclone and the 8 smaller cyclones encircling it.
Take a virtual tour of the moon in all-new 4K resolution - Ultra High Def - created from data provided by NASA's Lunar Reconnaissance Orbiter spacecraft.
NASA held a public naming contest in 2015, just before New Horizons' sweep past Pluto and Charon. The spacecraft mission team has used many of the Charon feature names since. Now the IAU gives the names the nod.
Could it be that the more rational and methodical searches for extraterrestrial intelligence are overlooking "the gorilla in the room?" A new study suggests it's possible.