An unusual shot of anticrepuscular rays

It looks like ordinary crepuscular rays are coming from the reflected sunlight at the base of this mountain. But that's not what's happening in this rare photo.

Moon in front of Taurus March 21 to 23

On March 21, 2018, the moon is near one of the Bull's most delicate features, a tiny, misty, dipper-shaped star cluster called the Pleiades.

Why do comets emit X-rays? Mystery solved

Researchers fired laser beams onto a plastic foil to mimic some of the conditions comets encounter as they travel through our solar system and to solve a long-standing mystery.

Researchers say 1st interstellar asteroid likely from double star

New research suggests that the 1st confirmed interstellar asteroid - called ‘Oumuamua by astronomers - likely came from a system where 2 stars orbit each other.

How can you know what to believe?

It's not surprising that a new study linking extreme winter weather in the U.S. East with a warmer Arctic has drawn fire from global warming skeptics. Should you believe the study or the skeptics?

NOAA’s 2018 US spring weather outlook

NOAA's 3-month outlook predicts that U.S. will see moderate flooding, and warmer-than-normal temperatures.

See it! Young moon, Venus, Mercury

Wow! So many of you are catching the moon, Venus and Mercury after sunset. Thank you for all your photos. We wish we could post them all!

How did turtles get their shells?

Where did turtles come from? And how did the they get their shells? The answers to these questions caused scientists to rethink the entire history of reptile evolution.

Spacecraft sees Jupiter as never before

Check out the massive cyclones at Jupiter's north and south poles, on display in stunning new images from the Juno spacecraft.

Researchers explore the voids between superclusters

An analysis of the cosmic microwave background has provided clues about the gas inside vast cosmic voids in space, between giant superclusters of galaxies.