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Editors of EarthSky
Earth’s last magnetic reversal took less than 100 years
A study demonstrates that Earth's last magnetic reversal - 786,000 years ago - happened in roughly the span of a human lifetime.
October 16, 2014
Spacecraft catches Mars atmosphere in act of escaping
Earth's atmosphere is leaking into space, too, but only very, very slowly. Meanwhile, Mars is thought to have lost much of its atmosphere already.
October 15, 2014
Crocodiles work as a team to hunt their prey
Crocs are able to conduct highly organized game drives. They might be second only to humans in their hunting prowess, says a researcher.
October 14, 2014
Mega flares from a mini star
You've heard of X flares from our sun? This mini star's biggest flare - seen in April, 2014 - was 10,000 times bigger than the biggest known solar X flare.
October 2, 2014
Curiosity rover drill pulls first taste from Mars mountain
The mission's emphasis has changed from drive, drive, drive to systematic layer-by-layer investigation. "Curiosity flew hundreds of millions of miles to do this."
September 29, 2014
The water in your bottle might be older than the sun
Up to half of the water on Earth and throughout our solar system likely originated as ices that formed in interstellar space.
September 27, 2014
Ice crystals don’t melt inside these fish
Antifreeze blood helps fish called notothenioids survive in icy Antarctic waters. The down side is that the ice crystals in their blood don't melt as temperatures warm.
September 24, 2014
Astronomers observe mysterious winds from a T Tauri star
T Tauri stars - infant solar systems - were thought to have powerful stellar winds. Astronomers have now observed T Tauri winds and might know what's causing them.
September 24, 2014
History of storm surge in Florida strongly underestimated
Northwestern Florida was thought to get hit by a hurricane with a five-meter (16-foot) storm surge every 400 years. In fact, the frequency may be every 40 years.
September 23, 2014
2014 Arctic sea ice minimum sixth-lowest on record
Sea ice in the Arctic continued its below-average trend this year as ice declined to its annual minimum. Meanwhile, in Antarctica, sea ice was at a record high.
September 23, 2014
