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 …

Jan 13, 2026 · 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 …

Feb 16, 2026 · NASA is currently tracking a car-sized asteroid set to zip past the Earth tomorrow, February 17, at a whopping 12,616 miles per hour. The space rock, 2026 CR2, is estimated to be …

Oct 7, 2025 · An asteroid has just flown closer to Earth than many satellites, according to space agencies.

Feb 9, 2026 · An Asteroid Might Slam Into the Moon in 2032—and Create a Fiery Flash That’s Visible to Earthlings, New Research Suggests Currently, NASA estimates that asteroid 2024 YR4 has a 4.3 …

Feb 16, 2026 · Explore current asteroid impact risk as scientists track near earth objects and assess space threats, explaining how close any known asteroid is to hitting Earth.

Ceres is the largest asteroid in the asteroid belt that lies between Mars and Jupiter. It orbits the sun once every 4.6 years. Ceres is both an asteroid and a dwarf planet, but it’s a unique bit of rock.

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 …

Feb 3, 2026 · Discover the rocky objects orbiting our sun with the latest asteroid news, features and articles.