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Posts by
Editors of EarthSky
View from space: Arkansas tornado track
A violent tornado touched down in Arkansas on April 27, 2014, killing as many as 15 people. In an April 28 satellite image, you can see the tornado's track. Compare it to a satellite image of the same area taken before the tornado.
April 30, 2014
Exoplanet’s day lasts only 8 hours
The length of an exoplanet's day has been measured for first time.
Planet Beta Pictoris b, 63 light-years away, is 16 times larger and 3,000 times more massive than the Earth, yet a day on the planet only lasts 8 hours.
April 30, 2014
A circuit board modeled on the human brain
New microchips based on the human brain are 9,000 times faster and use significantly less power than a typical PC.
April 30, 2014
Growing lettuce in space
A new space-faring lettuce is taking root on the International Space Station. Its name is "Outregeous."
April 28, 2014
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
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
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
