An asteroid is a minor planet —an object larger than a meteoroid (thus 1 meter or larger) that is neither a planet nor an identified comet —that orbits within the inner Solar System or is co-orbital with Jupiter …

3 days ago · NASA is monitoring a bus-sized asteroid that’s hurtling towards Earth at more than 38,500 miles per hour, according to the space agency's Center for Near Earth Object Studies (CNEOS). …

6 days ago · Asteroid, any of a host of small bodies, about 1,000 km (600 miles) or less in diameter, that orbit the Sun primarily between the orbits of Mars and Jupiter in a nearly flat ring called the asteroid …

Apr 25, 2025 · Asteroids, sometimes called minor planets, are rocky, airless remnants left over from the early formation of our solar system about 4.6 billion years ago. Most asteroids can be found orbiting …

Jan 9, 2026 · With data collected months before its main survey is due to begin, the Vera C. Rubin Observatory is already upending what we thought we knew about asteroids. In the Main Belt of …

Jan 8, 2026 · Scientists find ‘record-breaking’ asteroid nearly the size of eight football fields. Is it close to Earth? The asteroid was discovered using data from the world’s largest camera

NASA’s asteroid trackers have just watched a school‑bus‑sized space rock make a safe, distant pass by our planet, part of a steady stream of small objects that routinely zip through the ...

Jul 22, 2025 · A plane-sized asteroid scheduled to pass Earth next week is making headlines, but NASA experts want the public to understand why this encounter is more routine than remarkable.

Dec 1, 2025 · Discover the rocky objects orbiting our sun with the latest asteroid news, features and articles.

Jul 28, 2023 · Using NASA definitions, an asteroid is "A relatively small, inactive, rocky body orbiting the sun," while a comet is a "relatively small, at times active, object whose ices can vaporize in...