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Editors of EarthSky

Some perspective on winter 2014

U.S. winter of 2013-14 was only 1°F below average, but it followed two warmer-than-average winters. Did that fact make this winter seem colder than it was?

Zoom in on 680-gigapixel interactive mosaic of moon’s north pole

Click around on a new high resolution interactive mosaic of the moon's north pole, created using cameras aboard NASA's Lunar Reconnaissance Orbiter.

Asteroid to eclipse bright star Regulus tonight

Millions of people in New York City and points north can watch late tonight (March 19-20) as the bright star Regulus winks out when the asteroid hides it from view.

Overgrazing by deer is changing the face of U.S. forests

Deer's natural predators, wolves, have been exterminated. Today, overgrazing by deer in hugely multiplied numbers is affecting forests.

Do elephants make alarm call that means ‘humans!’?

A new study suggests that elephants make a specific rumble in response to the danger of humans that's distinct from calls warning of bees or other threats.

First direct evidence of cosmic inflation

Astrophysicists say this work offers new insights into some of our most basic questions: Why do we exist? How did the universe begin?

Space rainbow: Glory seen in Venus atmosphere

For the first time, a spacecraft has imaged a rainbow-like feature known as a ‘glory’ on another planet.

This rough diamond hints at oceans’ worth of water inside Earth

A $20 diamond provides evidence of a 'wet zone' deep below Earth's surface where vast volumes of water are locked up inside minerals.

This tiny creature is called a tardigrade

Tardigrades are microscopic animals. They can go into a state of suspended animation and survive a long time without water or oxygen, even in the vacuum of space.

Largest yellow star yet discovered

Scientists say the hypergiant yellow star is absolutely huge, one of the ten largest stars found so far. It's 1,300 times the diameter of the sun and about a million times brighter.