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 …

Mar 9, 2026 · 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 …

Jul 28, 2023 · Asteroids are space rocks that mostly exist between Mars and Jupiter. They are made of material left over from the birth of the solar system.

May 14, 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 …

May 29, 2026 · Is it likely for an asteroid to hit Earth anytime soon? In this article, we’ll answer the most burning questions about potentially hazardous asteroids.

May 18, 2026 · Asteroid 2026 JH2 is set to zip past our planet on Monday 18 May 2026 at a very close distance, by astronomical standards. It was first spotted on 10 May 2026 by the Mt. Lemmon Survey …

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May 18, 2026 · Newly spotted asteroid 2026 JH2, which could be up to 115 feet wide, will fly past Earth closer than some satellites on Monday (May 18). The close approach will be visible to stargazers and …

Two plane-sized asteroids and another house-sized one will zip past the Earth today, and more are expected later in the week.

2 days ago · Our system continuously monitors data from Minor Planet Center and NASA Sentry to keep you informed. Current monitoring shows: 1 close approaches within 5 lunar distances and 3 objects …