Asteroid - Wikipedia
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 …
Eyes on Asteroids - Home - NASA/JPL
2 days ago · Explore the 3D world of Asteroids, Comets and NEOs. Learn about past and future missions, tracking and predicting orbits, and close approaches to Earth.
Asteroid | Definition, Size, & Facts | Britannica
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 …
Chance of a devastating asteroid impact briefly spiked in 2025
Dec 10, 2025 · The chances of a devastating asteroid impact briefly spiked in 2025, after astronomers discovered a building-sized asteroid hurtling towards Earth. The asteroid, named 2024 YR4, was first …
NASA tracking bus-sized asteroid approaching Earth this week
6 days 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 …
NASA is tracking a bus-size asteroid heading our way ... - MSN
A bus-size asteroid is on course to skim past our planet, a reminder that Earth moves through a shooting gallery of rocks and ice. The close pass sounds ominous, but the science behind these ...
Asteroid Facts - Science@NASA
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 …