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Clocking Neptune’s mysterious spin
A day on Neptune lasts 15 hours, 57 minutes and 59 seconds, according to the first accurate measurement of its rotational period.
July 3, 2011
Brightest quasar in early universe found
The quasar ULAS J1120+0641 is the brightest object yet discovered in the early universe, powered by a black hole with a mass two billion times that of the sun.
June 30, 2011
Asteroid close miss of Earth June 27
An asteroid the size of an RV motor home will narrowly miss striking Earth on June 27. Read more about the asteroid close miss.
June 27, 2011
In early universe, galaxies were awake or asleep, says study
Astronomers captured light from 40,000 galaxies and discovered that even in the early universe, galaxies were either awake or asleep.
June 27, 2011
Pandora’s cluster unveiled with new clues
Astronomers use various telescopes to piece together the complex history of Pandora's cluster, showing a pile-up of at least four separate galaxy clusters.
June 26, 2011
Spacecraft rendezvous with icy world: But which one?
The New Horizons spacecraft will have enough fuel for a side trip to a frozen object near Pluto, and IceHunters wants your help in picking the spacecraft rendezvous.
June 26, 2011
Flames of Betelgeuse in new image
Infrared imagery from the Very Large Telescope shows a dazzling nebula around Betelgeuse, one of the brightest stars in the night sky.
June 24, 2011
See a glowing emerald nebula in the Milky Way
Spitzer Space Telescope captured the infrared light from an emerald nebula, RCW 120, likely surrounding terrifically hot giant stars. See it here.
June 23, 2011
Phobos slips past Jupiter
The Mars Express spacecraft observed an alignment of Jupiter and the Martian moon Phobos. Captured images now appear as an animation of this rare event.
June 20, 2011
Major drop in solar activity ahead, scientists say
The sun might be headed for a rest period, according to the National Solar Observatory and the Air Force Research Laboratory. Read more about the possible drop in solar activity.
June 14, 2011
