The chemical composition of a meteorite that was built much like early Earth shows evidence of ample hydrogen necessary to ...

As you watch the night sky, streaks of light often flash for a moment, then disappear. These brilliant flashes—called ...

YR4 won't hit Earth, but scientists now estimate a 4% chance it could strike the Moon, possibly affecting space missions.

A few months ago, an asteroid created quite a buzz. At one point, asteroid 2024 YR4 had a 3.1% chance of hitting Earth, ...

An asteroid known as 2024 YR4 won't be crashing into Earth, but the James Webb Space Telescope went to get a look at it ...

This is a still from an animation showing asteroid 2024 YR4 as it passes by Earth and heads toward its potential impact with the Moon. This 3D shape of the asteroid was determined from data obtained ...

Much of what scientists know about the early solar system comes from meteorites—ancient rocks that travel through space and survive a fiery plunge through Earth's atmosphere. Among meteorites, one ...

2024 YR4 may not make catastrophic history, but it did set a new record for the JWST as the smallest object ever targeted by ...

Scientists have unveiled new information about the 2024 YR4, a 'city killer' asteroid that scientists had warned could have a ...

Of all the asteroids that become meteoroids by striking Earth's surface, only 4% contain abundant carbon. But scientists know ...

The city-killer asteroid's Moon impact risk has almost more than doubled, according to new NASA reports. Here's what we know.