Asteroids are minor planets, especially those of the inner Solar System. The larger ones have .... The term "asteroid", from the Greek word for "star-like", never had a formal definition, with the broader term minor planet being preferred by the ...
An asteroid is like a comet. However, while comets are mostly made of ice, asteroids are made up of rock or even metal. This makes them dangerous because ...
Asteroid definition, Also called minor planet. Astronomy. any of the thousands of small bodies of from 480 miles (775 km) to less than one mile (1.6 km) in ...
Define asteroid: any one of thousands of small planets that circle around the sun — asteroid in a sentence.
Thousands of asteroids are in orbit around the sun. ... Sentences: NASA's Dawn spacecraft studies asteroids. Thousands ... Return to NASA's Picture Dictionary.
The definition of an asteroid is a rocky mass that orbits the sun. Facts About Astroids. More than 1,800 asteroids have been identifed in the solar system.
Nov 17, 2016 ... Asteroids are small, rocky objects that orbit the sun. Although asteroids orbit the sun like planets, they are much smaller than planets.
Asteroid definition: An asteroid is one of the very small planets that move around the sun between Mars and... | Meaning, pronunciation, translations and ...