An artist's illustration shows the James Webb Space Telescope peering out into the solar system toward the asteroid belt. Ella Maru and Julien de Wit Every few years, an asteroid that’s about the size ...

Astronomers have found a way to spot the smallest, 'decameter,' asteroids within the main asteroid belt. They used their approach to detect more than 100 new asteroids, ranging from the size of a bus ...

Every few years, an asteroid that’s about the size of a bus strikes Earth. These rocks are much smaller than the one that drove dinosaurs to extinction, but they can still have a significant impact.