Search results
- Dictionaryasteroid/ˈast(ə)rɔɪd/
noun
- 1. a small rocky body orbiting the sun. Large numbers of these, ranging enormously in size, are found between the orbits of Mars and Jupiter, though some have more eccentric orbits.
- 2. an echinoderm of the class Asteroidea, which comprises the starfishes.
adjective
- 1. relating to or denoting echinoderms of the class Asteroidea.
Powered by Oxford Dictionaries
4 days ago · Asteroids are small, rocky objects that orbit the sun. Although asteroids orbit the sun like planets, they are much smaller than planets. A close-up image of the asteroid Ida taken by NASA's Galileo spacecraft. Image credit: NASA/JPL-Caltech/UCLA/MPS/DLR/IDA. There are lots of asteroids in our solar system.
An asteroid is a minor planet—an object that is neither a true planet nor an identified comet— that orbits within the inner Solar System. They are rocky, metallic, or icy bodies with no atmosphere.
Jul 5, 2024 · 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.
An asteroid is a relatively small chunk of rocky minerals that orbits the Sun, often described as a minor planet. When the orbiting object is larger, it's called a planetoid.
Overview. 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.
an object like a very large rock that goes around the sun like a planet: Scientists are hoping an asteroid will clue them in about early life on earth. (Definition of asteroid from the Cambridge Academic Content Dictionary © Cambridge University Press)
1. : resembling a star. asteroid bodies in sporotrichosis. 2. : of or resembling a starfish. Examples of asteroid in a Sentence. Noun Most asteroids are found between Mars and Jupiter. Recent Examples on the Web. Noun.
Jul 28, 2023 · Asteroids are the rocky remnants of material leftover from the formation of the solar system and its planets approximately 4.6 billion years ago. The majority of asteroids...
Asteroids contain minerals, such as nickel, cobalt, and even platinum. The Outer Space Treaty covers the Moon, asteroids, and everything else in outer space. They want to mine asteroids. Thousands of asteroids pass near Earth every year, and scientists believe those asteroids could be very valuable.
Asteroid definition: any of millions of small celestial objects revolving around the sun, often irregularly shaped and having a great range in size, from as small as 6 feet (2 meters) across to about 620 miles (998 kilometers) across.
