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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 (Trojan asteroids).
Asteroids - Science@NASA
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 the Sun between Mars and Jupiter within the main asteroid belt.
Eyes on Asteroids - Home - NASA/JPL
You are looking at a real-time visualization of every known asteroid or comet that is classified as a Near-Earth Object (NEO). With asteroids represented as blue points, and comets as white points, our database is updated daily to give you approximately 42,000 NEOs (and counting).
Asteroid | Definition, Size, & Facts | Britannica
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 asteroid belt. Hundreds of thousands of asteroids are known.
Asteroid Facts - Science@NASA
You're looking at a real-time visualization of every known asteroid or comet classified as a Near-Earth Object, or NEO. Most asteroids orbit our Sun between Mars and Jupiter within the main asteroid belt.
Next Asteroid to Hit Earth | Asteroid 2026 | Asteroid Heading Towards Earth
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.
Asteroid belt - Wikipedia
It contains a great many solid, irregularly shaped bodies called asteroids or minor planets. The identified objects are of many sizes, but much smaller than planets, and, on average, are about one million kilometers (or six hundred thousand miles) apart.
What Is an Asteroid? | NASA Space Place – NASA Science for Kids
The objects in the asteroid belt never had the chance to be incorporated into planets. They are leftovers from that time long ago when planets formed. Are all asteroids the same? No way! Because asteroids formed in different locations at different distances from the sun, no two asteroids are alike. Here are a few ways that they differ:
Asteroid - Simple English Wikipedia, the free encyclopedia
An asteroid is a minor planet that orbits within the inner solar system. It is a small object in the Solar System that travels around the Sun. It is like a planet but smaller. They range from very small (smaller than a car) to 600 miles (1000 km) across. A few asteroids have an asteroid moon.
What are asteroids? | Space
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...
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