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 …

Dec 24, 2025 · 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 …

2 days ago · You are looking at a real-time visualization of every known asteroid or comet that is classified as a Near-Earth Object (NEO). With asteroids represented as blue points, and …

4 days ago · 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 …

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

5 days ago · 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

Asteroids are rocky celestial bodies that orbit the Sun, but do not meet the requirements to be classified as a planet. The term asteroid covers a very broad range of Solar System objects, …

Jun 23, 2025 · Asteroids can give scientists key insights into the formation of our solar system and the Milky Way. They contain materials that predate the formation of our solar system. Earlier …

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 …

Feb 19, 2025 · What are asteroids, where do they come from and how can you see an asteroid in the night sky? A guide to these fascinating space rocks.