A massive asteroid, named 2025 OW, resembling a 25-storey building, is approaching Earth next week. It measures about 220 ...

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

The asteroid 2025 OW measures about 210 feet in length. It is reported to pass by Earth on July 28, 2025, at a distance of 393,000 miles, which is about 1.6 times the average distance to the moon. It ...

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 ...

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