If An Asteroid Were Headed For Earth, Would We Be Ready?
Sooner or later, a sizable asteroid could impact a populated area on Earth. How is the US, and the world, preparing?
The Human Obsession With Aliens Goes Way, Way Back
A new book charts the millennia-old history of our fascination with aliens, and how myth transformed into research.
How Fascination With Aliens Spread Across 17th Century Europe
The debate over the existence of extraterrestrial life touches literature, religion, and science in 17th century Europe.
Meet 3I/Atlas, An Object From Another Solar System
The third interstellar object ever observed is in our neighborhood—for now. And, asteroid Bennu could contain dust from far-off solar systems.
The Shape-Shifting Science Of Sand Dunes
A sand dune is much more than just a big pile of sand. But how do they work? And what else do scientists want to know about sand?
An ER Doctor Reflects On Hurricane Katrina, 20 Years Later
Dr. Erica Fisher was working at Charity Hospital when it flooded, trapping her and 1,600 other people inside during Hurricane Katrina.
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What Lies Beneath The Outer Layers Of A Star?
Astronomers found a supernova whose lighter outer layers had been stripped away, revealing an inner shell rich in silicon and sulfur.
Remembering Apollo 13 Astronaut James Lovell
The late James Lovell was commander of the ill-fated Apollo 13 mission. In 1995, he recounted the story of the real-life space drama.
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NASA Employees Protest Cuts In Formal Dissent Letter
Retired astronaut Cady Coleman explains why she felt compelled to sign “The Voyager Declaration.”
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Parker Solar Probe Captures Closest-Ever Images Of The Sun
The newly released images from a December flyby are so detailed that scientists can see explosions and the flow of solar winds.