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 …

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 …

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 called the …

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 this year, a …

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

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.

Dec 23, 2025 · Science News: NASA confirmed that a bus-sized asteroid passed Earth on 22 December 2025 in a routine flyby that had been tracked well in advance and posed no risk t.

Apr 22, 2025 · The asteroid 99942 Apophis is headed for a close flyby with Earth on April 13, 2029, and space agencies are coordinating efforts to study the object during this the once-in-a-lifetime …

There are three general types of asteroids: carbonaceous, stony, and metallic. They are called C-type, S-type, and M-type asteroids. The names are based on the type of material believed to make up …

Dec 14, 2025 · Scientists are decoding fragile meteorites to uncover which small asteroids could become future treasure troves for space exploration.