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 …

5 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 …

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 …

Jan 7, 2026 · In its preliminary data release, taken from just seven nights of observations, the powerful Vera C. Rubin Observatory has discovered an enormous, fast-spinning asteroid that …

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 …

Jan 9, 2026 · The newly discovered asteroid 2025 MN45, illustrated here, is the fastest spinning asteroid larger than 500 meters ever found. It spins once every 112 seconds. NSF-DOE Vera …

2 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 …