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Mountaineers leave Everest, as Sherpas say they won’t climb
Mountaineers began leaving Mt. Everest yesterday, as Sherpas refuse to climb again this year, out of respect for 16 who died in last week's deadly avalanche.
April 25, 2014
Moon and Venus on mornings of April 25 and 26
The moon and Venus are the second- and third-brightest objects in Earth's sky, after the sun. You'll see them together now in the east before dawn.
April 25, 2014
First sex-determing genes appeared 180 million years ago
The Y chromosome, which distinguishes males from females at the genetic level, appeared some 180 million years ago, according to a new study published in Nature.
April 24, 2014
Is spacetime like a liquid?
A very slippery superfluid, that’s what spacetime could be like, say physicists.
April 24, 2014
6.6-magnitude earthquake off Vancouver Island on April 23
The quake hit at 8:10 p.m. local time. There were no immediate reports of damage or injuries. No tsunami warning was issued.
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
Halo around the sun over Normandy, France
We get many messages throughout each year from people who’ve just spotted a halo, or ring, around the sun or moon.
April 24, 2014
An ancient sea god under the Milky Way
A mythical Celtic god of the sea and the edgewise view into our own Milky Way galaxy, as captured by Glenn Miles Photography in Northern Ireland.
April 23, 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
