The night sky never stays still. And sometimes, it brings a quiet reminder that we share this vast space with wandering rocks ...

Aliens are visiting our solar system. Not little green men, sadly, but natural alien objects—cosmic bodies such as comets and ...

Asteroid 2024 YR4, which once appeared to be on a collision course with Earth, may hit the moon, which could create some ...

Scientists have discovered that Earth could have at least six minimoons that we never knew existed. A minimoon is a small ...

Declining birth rates around the world may pose new challenges for humanity. A new book on the topic by Elon Musk–funded ...

Astronomers think small space rocks from beyond our solar system routinely strike Earth—but proving it isn’t easy ...

Comet 3I/ATLAS was first identified by the Asteroid Terrestrial-impact Last Alert System (ATLAS), a global network of four ...

"In my opinion, planetary defense is an operational mission which should be formally tasked to U.S. Space Command." ...

Heliostats that harness sunlight by day could help detect asteroids by night, offering the U.S. a scalable planetary defense ...

Learn about the plane-sized asteroid that will pass by Earth the week of July 28, 2025, and find out how astronauts can track asteroids across space.

Sandia scientist John Sandusky believes he has found a way to put heliostats, which typically turn solar energy into ...