Two Trailblazing Spacewalks in 1965 Opened the Door to Decades of Astronauts Pushing the Limits of Their Capabilities

Astronomers Think They’ve Found a Reliable Biosignature. But There’s a Catch

As mountain glaciers melt, risk of catastrophic flash floods rises for millions

Judge disses Star Trek icon Data’s poetry while ruling AI can’t author works

Parrots and humans share a brain mechanism for speech

Side-Release Buckle History: The Fasten, The Furious

Video: The First Attack on the Twin Towers [14:22]

As Children, They Fled the Nazis Alone. Newly Found Papers Tell Their Story.

How astronauts adjust when back on Earth after being in space

Harvard Announces Free Tuition for Students Whose Families Make Under $200,000

Photographer’s Once-in-a-Lifetime Shots of the Lunar Eclipse and Aurora

Why history instruction is critical for combating online misinformation

2,900-year-old settlement found submerged in Italy lake. See its treasures

Can Any Nearby Supernova Cause a Mass Extinction?

Dolphins welcome SpaceX’s Crew-9 astronauts home after splashdown (video)

How do we know pi is an irrational number?

The 30,000 year old vulture that reveals a completely new type of fossilisation

Blue Ghost lander captures stunning sunset shots on the moon before falling silent