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

Astronomers have traced the origin of asteroid 2024 YR4, which appears to have broken off from a larger space rock.

Now a different group has looked at its orbital past, suggesting a likely place of origin: the middle of the main asteroid ...

A recently discovered asteroid, 2024 YR4, sparked the first-ever global alert from the International Asteroid Warning Network ...

An asteroid which could be up to 220 feet wide will now miss Earth - but the chances of the space rock slamming into the moon ...

YR4 asteroid is thought to be hockey puck shaped and house-sized, with the asteroid, detected in December, initially thought ...

Lindley Johnson has been a pioneer in blueprinting warning and response scenarios to any potential impact of Earth by an ...

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

Consider the dramatic visual and gravitational consequences if a large asteroid struck and fractured the Moon.

A team of astronomers has determined the shape of asteroid 2024 YR4, which could hit the moon. | Credit: NOIRLab/NSF/AURA/R. Proctor Scientists have revealed the unusual shape of a large asteroid with ...

An anomaly has forced the Japanese asteroid-sampling spacecraft Hayabusa2 into protective "safe mode" while journeying ...

YR4 asteroid has a near-zero chance of striking Earth, but a slim chance of hitting the moon, new research says.