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

May 5, 2025 · Asteroids, sometimes called minor planets, are rocky remnants left over from the formation of our solar system about 4.6 billion years ago. For the most up to date count of …

1 day ago · NASA spots large asteroid on collision course with the Moon Building-sized asteroid won't hit Earth, but has a 4% chance of striking the Moon in 2032

Oct 20, 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 …

1 day ago · Understand what asteroids are, how the asteroid belt works, and why these rocky solar system objects help us learn about our planetary origins.

Oct 28, 2025 · Astronomers discover 2025 SC79, the solar system's second-fastest asteroid, hiding in the Sun's glare. Learn why these 'twilight' asteroids are a top priority for planetary …

Oct 27, 2025 · The International Asteroid Warning Network calls itself a "worldwide collaboration of asteroid astronomers and modelers" and was formed following recommendations from the …

Oct 29, 2025 · The comet was discovered on July 1 this year by the NASA-funded ATLAS (Asteroid Terrestrial-impact Last Alert System) survey telescope in Rio Hurtado, Chile, and …

4 days ago · The fast spin of small near-Earth asteroids suggests scientists need to revise their ideas about what holds these rocky bodies together.

Asteroids are small, atmosphere-less rocky objects orbiting the Sun. Here are 10 things that you might not know about these planet-like celestial bodies that can crash into the Earth and …