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This date in science: Supernova 1987A
Supernova 1987A first appeared in earthly skies 30 years ago today. It was the closest observed supernova since 1604.
February 23, 2017
Ice circles in Syracuse, New York
You need slow-moving currents, moving in circular eddies, to form ice circles, and you need just the right air and water temperature. So they're rare!
February 23, 2017
Wow! Nearby TRAPPIST-1 has 7 planets
Big discovery! NASA's Spitzer Space Telescope has revealed 7 Earth-sized planets orbiting a tiny star only 40 light-years away. Three of them are firmly in the habitable zone.
February 22, 2017
What would life be like near TRAPPIST-1?
The newly discovered exoplanets orbiting this nearby star are likely to be bathed in high-energy ultraviolet radiation. What would life be like there? An expert explains.
February 22, 2017
Scientists spy 8th continent, Zealandia
A long-lost land mass is submerged in the depths of the southwestern Pacific Ocean. Should it be recognized as a full-fledged continent?
February 22, 2017
Gaza rainbow
What a lovely scene. Maysoon Abu Hmead captured this image in Gaza, Palestine last week.
February 22, 2017
Watch drone video of Falcon 9 landing
You've probably seen footage of rockets taking off, but here's Falcon 9 returning to Earth and landing safely after its launch on Sunday.
February 21, 2017
Brightest, farthest pulsar found!
In one second, this distant pulsar – the spinning remains of a once-massive star – emits the same amount of energy as that released by our sun in 3.5 years.
February 21, 2017
Chicago from St. Joseph, Michigan
The little building in the center of the sunset is in Chicago, as seen from across Lake Michigan, 60 miles away.
February 21, 2017
How did horses evolve?
A new 'tree of life,' showing how horses have evolved over the past 18 million years challenges long-held ideas.
February 20, 2017
