CHICAGO -- A NASA spacecraft has intentionally slammed into an asteroid in humanity's first test of planetary defense. The impact occurred at 7:15 p.m. ET greeted by cheers from the mission team in ...

An asteroid estimated to be a kilometer (3,451 feet) wide will fly by Earth on January 18. The video in the media player above is from a related report. It will pass within 1.2 million miles of our ...

Asteroid 2024 YR4, a roughly 180 foot wide rock initially labeled a “city killer,” has focused attention on how quickly a ...

Designed to explore a metal asteroid that could be the heart of a planet, the Psyche mission is readying for a 2022 launch. After extensive review, NASA Headquarters in Washington has approved the ...

The space rock, known as “2026 AJ” and 40 feet in diameter, is hurtling towards our planet at around 20,500 miles per hour.