On March 21, 2021, an object the size of the Empire State Building—traveling at 77,000 miles per hour—passed within 1.25 ...

From its first detection using an instrument designed in part by teams based in the Bay, to follow-up orbit analysis ...

Asteroid 2024 YR4 will not hit Earth, but it has forced planetary defense experts to confront a different kind of worst case: ...

"It sounds like science fiction or the stuff of Hollywood movies." ...

“Impact flashes on the moon are very common,” University of Colorado Boulder astrophysical and planetary sciences professor Paul Hayne said. “In fact, they happen more or less every night, and it’s a ...

With a 4% chance of hitting the moon in 2032, an asteroid named YR4’s potential collision course is being monitored by NASA.

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, causing mass extinction. New research suggests dinosaur populations were still ...

A clear look at the discovery of 40,000 near-Earth asteroids, how scientists track them, and the missions working to keep our ...

Scientists have long debated whether dinosaurs were in decline before an asteroid smacked the Earth 66 million years ago, causing mass extinction. New research suggests dinosaur populations were still ...