Laying out a theory for nonavian dinosaur extinction. Scientists hypothesized in 1980 that a collision with a giant space rock led to the death of the dinosaurs. Back then, the researchers didn ...

A Building-Sized Visitor from Space. Asteroid 2024 XN1 is a prime example of a near-Earth object that astronomers carefully monitor for insights into the behavior of space rocks. The asteroid’s ...

The 60-meter asteroid 2024 YR4 has a 4.3% chance of hitting the Moon, potentially releasing 100 million kilograms of debris ...

Some studies have suggested that they're material from the ancient Earth — either a layer of primordial unmixed rock from the planet's formation or a leftover hunk of the giant space rock that ...

Scientists hypothesized in 1980 that a collision with a giant space rock led to the death of the dinosaurs. Back then, the researchers didn’t find the asteroid itself; instead, ...