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Why no young stars at Milky Way center?
An international team of astronomers finds that that there's a large region around the center of our home galaxy that's devoid of young stars.
August 1, 2016
Emirates Mars Mission to launch in 2020
The Emirates Mars Mission - which carries the name Hope - will become the first-ever mission to the Red Planet by any Arab country.
August 1, 2016
Solar eruption larger than Earth
Here is gas arching up from the surface of the sun, sculpted by the sun's magnetic fields. These great features are called prominences.
August 1, 2016
See all 5 bright planets after sunset
Three of the 5 planets are easy to see. Two aren't so easy. Charts and info here that can help you see all 5 planets together in early August 2016.
July 31, 2016
Gorgeous Dry Tortugas night skies
The National Park Service normally doesn't allow night photography at the Dry Tortugas, but made an exception for this project.
July 30, 2016
Mercury-Regulus conjunction on July 30
Planet Mercury and star Regulus appear in 2016's closest conjunction of a planet and a bright star on July 30. Too bad they're so near the sunset glare.
July 30, 2016
Spectacular rocket reentry over US West
Observers in the U.S. West saw a disintegrating meteor - a fireball, or extremely bright meteor - on July 27, 2016. It was the reentry of a Chinese rocket body.
July 29, 2016
How much warning for supervolcanoes?
Yellowstone supervolcano could deposit ash across the U.S. Northwest, clogging rivers and streams and affecting agriculture. How much advance warning might we have?
July 28, 2016
Air conditioning’s big global impact
Higher global temperatures combined with higher global incomes mean more air conditioners. But what do more air conditioners mean?
July 28, 2016
Moon and Aldebaran before dawn July 29
From most of North America, the moon and star Aldebaran will appear a hair’s-breadth apart. From Texas, Mexico or Central America, the moon will cover Aldebaran.
July 28, 2016
