On December 27, 2024, astronomers detected a new asteroid, 2024 YR4, that briefly became the most closely watched space rock ...

YR4, the "city-killer" asteroid that briefly made headlines last year due to a small but non-zero chance that it may hit the ...

When an asteroid threatens Earth, astronomers use a rating called the Torino scale to communicate the risk. Richard Binzel, ...

Earth has one true moon, but there are also several asteroids known as quasi-moons that are in orbit with the sun. A newly discovered asteroid, 2025 PN7, is the seventh confirmed quasi-moon that ...