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 asteroids).

1 day ago · NASA is monitoring a bus-sized asteroid that’s soaring towards Earth at nearly 8,000 miles per hour, according to the space agency's Center for Near Earth Object Studies (CNEOS). Estimated …

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 3, 2025 · Samples collected from the asteroid Bennu are continuing the shed light on the origins of the solar system and how life developed on Earth, scientists say.

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 called the …

Dec 5, 2025 · An asteroid approach is simply the moment when a near-Earth object moves through a section of space that is relatively close to Earth’s orbital path, often noticed only by astronomers …

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 …

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 asteroids …

Oct 5, 2024 · An asteroid is a small, rocky object that orbits the Sun, primarily found in the asteroid belt between Mars and Jupiter. Asteroids range in size from tiny pebbles to massive bodies hundreds of …

Dec 3, 2025 · These are the planetary defenders who are on the hunt for the next big asteroid that could impact Earth — and how we might stop it.