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 …

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 …

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 …

1 day ago · A 200-foot asteroid has a 4 percent chance of hitting the moon in 2032—and we could see it If an incoming asteroid hits the moon, it'd be visible from Earth, according to a new study

Meet asteroid 2024 YR4, the rock with a date near the Moon The object drawing so much attention is asteroid 2024 YR4, a near‑Earth object about 200 feet (60 meters) wide, comparable in height to ...

2 days ago · A 60-meter-wide asteroid, 2024 YR4, could collide with the Moon in December 2032, offering scientists an unprecedented chance to observe a powerful lunar impact.

3 days ago · If the building-size asteroid 2024 YR4 crashes into the moon in December 2032, the impact will produce a bright flash that may be visible to the naked eye, a new study finds.

Jul 28, 2023 · Using NASA definitions, an asteroid is "A relatively small, inactive, rocky body orbiting the sun," while a comet is a "relatively small, at times active, object whose ices can vaporize in...

Jan 28, 2026 · Asteroid 2024 YR4: Astronomers Are Preparing For The "Most Energetic Lunar Impact Witnessed In Human History" If the impact occurs, it will hit with the force of 6.5 megatons of TNT …

2 days ago · Could humanity nuke an incoming asteroid to deflect it and save the Earth, disaster-movie style? A unique new impact simulation suggests that a nuclear option could be a viable last resort to …