A July flyby of a massive asteroid went undetected until two days after it passed, raising urgent questions about planetary defense.

While most of them are small and disappear in the atmosphere, some of them come alarmingly close to our planet. While ...

A small asteroid, known as 2025 TF, flew over Antarctica on October 1, 2025, at an altitude of only 266 miles.

On October 31, 2015, an asteroid shaped like a human skull flew by Earth. It arrived with excellent timing on Halloween, ...

A small asteroid just gave the Earth a close buzz. The little space rock, called 2025 TF, safely passed within roughly 250 miles (400 km) of our planet on Tuesday (Sept. 30) at 8:49 p.m. EDT ...

There are many programs that detect near-Earth asteroids as part of countries' planetary defense strategies. In the case of ...

On Sept. 26, 2022, NASA's Double Asteroid Redirection Test craft smashed into its target, the hazardous asteroid Dimorphos, and raised hopes that a space rock could be deflected from a collision ...

PHILADELPHIA -- An asteroid named for the Egyptian god of chaos and darkness won't be wreaking any havoc on Earth -- at least not this century. That's the good news from NASA's Center for Near-Earth ...

Although it won’t hit Earth, an asteroid once labeled a “city killer” is now back in the spotlight — this time, because it might hit the moon. KTLA spoke with Davide Farnocchia, a navigation engineer ...

ESA's planned Ramses mission would arrive at the asteroid Apophis two months before the asteroid's April 2029 close flyby of Earth. Credit: ESA WASHINGTON — A European-led mission to the asteroid ...

It's not unusual to have small asteroids pass closer to the Earth than the moon's distance of 240,000 miles. Matter of fact, the house-sized 2011 UX255 buzzed only 96,000 miles from our planet last ...