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Posts by
Editors of EarthSky
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.
March 19, 2014
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.
March 18, 2014
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.
March 17, 2014
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?
March 17, 2014
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.
March 15, 2014
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.
March 14, 2014
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.
March 13, 2014
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.
March 12, 2014
Death stars in Orion blast planets before they even form
Young stars in the Orion Nebula get their potential planet-forming dust and gas blasted away if they're near enough to 'death stars' - massive O-type stars that emit fierce ultraviolet radiation.
March 10, 2014
A telescope bigger than a galaxy
Astronomers have figured out how to use the gravity of distant galaxies to bend light and magnify images, forming gigantic telescopes that see deeper into the cosmos than ever before.
March 10, 2014
