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Red sprite over Oklahoma
Photographer Paul Smith said he thinks this may be the 1st documented capture of a red sprite over Oklahoma. They're large-scale electrical discharges - high above thunderstorm clouds - flickering in the night.
October 11, 2017
Help identify Earth features in astronaut photos
Hey citizen scientists! You're invited to test a new tool to study Earth using photos taken by International Space Station astronauts. Here's how.
October 6, 2017
Scientists reveal secrets of lost continent Zealandia
Scientists have just returned from a major expedition to Zealandia, a "hidden" Earth continent, likely submerged beneath the sea surface more than 80 million years ago.
October 1, 2017
Why don’t poison frogs poison themselves?
Scientists are a step closer to resolving this head-scratcher. And their findings have potential consequences for the fight against pain and addiction.
September 29, 2017
Did dino-killing asteroid speed bird evolution?
A study suggests the asteroid that wiped out the dinosaurs 66 million years ago increased the pace of evolution in birds, their only remaining descendants.
September 28, 2017
Passing spacecraft snaps Earth pics
OSIRIS-REx swept past Earth on September 22 and received a gravity boost toward its goal, asteroid Bennu, in 2018. It also acquired the images to make this stunning new Earth portrait.
September 26, 2017
Giant iceberg on the move
The calving of this iceberg in July reduced the size of Antarctica's Larsen C ice shelf by 12 percent. The berg hung near the coast awhile, but now it's seen drifting.
September 25, 2017
Sun on the sky’s equator
Another great explanation of Friday's equinox - plus beautiful graphics - from astronomer Guy Ottewell.
September 22, 2017
Zap! Biologist measures electric eel’s shock on his own arm
Talk about dedication to science! This biologist stuck his arm into an eel tank - 10 times - to get an accurate measure of an eel's shock. He said it felt "like touching a horse fence."
September 20, 2017
