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Sun’s fourth-closest neighbor is cold and frosty
Astronomers have discovered a dim, star-like body that surprisingly is as frosty as Earth's North Pole. This "brown dwarf" is only 7.2 light years away, making it one of the sun's nearest neighbors.
April 28, 2014
Is spacetime like a liquid?
A very slippery superfluid, that’s what spacetime could be like, say physicists.
April 24, 2014
The zodiacal light, seen from the moon
NASA's LADEE spacecraft captured images of the eerie zodiacal light seen from the moon, shortly before it made a planned crash-landing on April 17.
April 24, 2014
A dance of supermassive black holes
This is the first time a pair of orbiting, supermassive black holes has been found in an ordinary galaxy.
April 22, 2014
Whoa! 26 atom-bomb-scale asteroid impacts since 2000
Most exploded over an ocean, and too high in the atmosphere to do damage, but evidence is mounting that asteroid impacts are more frequent than once believed.
April 22, 2014
MESSENGER completes 3,000th orbit of Mercury, sets mark for closest approach
MESSENGER has been getting closer to Mercury since March. It's now closer to the planet than any spacecraft has been before.
April 21, 2014
How do astronomers know Jupiter’s mass?
Astronomers use the orbiting moons of Jupiter - largest planet in our solar system - to find Jupiter's mass.
April 21, 2014
7 ways to celebrate International Dark Sky Week
International Dark Sky Week runs April 20-26, 2014. Learn how to help celebrate and preserve the beauty of the night.
April 20, 2014
April 18’s mid-level solar flare
A mid-level flare burst from the sun on April 18. This image, from NASA's Solar Dynamics Observatory. shows the flare as a bright spot on the sun.
April 18, 2014
New image of red nebula 7,300 light-years from Earth
In the middle of little-known nebula Gum 41, brilliant hot young stars are giving off energetic radiation that causes the surrounding hydrogen to glow red.
April 18, 2014
