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

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

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

On July 1, 2025, astronomers caught sight of a mysterious object racing through the solar system. This object, now named ...

NASA’s AI-powered satellite makes real-time targeting decisions in space—autonomously and in under 90 seconds.

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

In a mission that changed our understanding of gas giants, NASA’s Galileo spacecraft made history not just in orbit but also ...

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

The asteroid, known by the name of 2025 OW and measuring approximately 210 feet (0.5 kilometers) in length, will pass Earth ...

A technology called Dynamic Targeting could enable spacecraft to decide, autonomously and within seconds, where to best make ...

Experts confirmed the discovery of a rare interstellar visitor—only the third ever detected—hurtling through our Solar System ...