Web Results
as·ter·oid
[as-tuh-roid]
NOUN
1.
Astronomy. any of the thousands of small bodies of from 480 miles (775 km) to less than one mile (1.6 km) in diameter that revolve about the sun in orbits lying mostly between those of Mars and Jupiter.
2.
Zoology. an asteroidean; a starfish.
ADJECTIVE
3.
Source: Dictionary.com
asteroid | Define asteroid at Dictionary.com
dictionary.reference.com/browse/asteroid
The world's most popular free online dictionary with definitions, spell check, word origins, example sentences, audio pronunciations, Word of the Day and more!

Asteroid - Wikipedia

en.wikipedia.org/wiki/Asteroid

Asteroids are minor planets, especially those of the inner Solar System. The larger ones have also been called planetoids. These terms have historically been  ...

What is an asteroid, a planetoid, a meteoroid?

www.qrg.northwestern.edu/projects/vss/docs/space-environment/1-asteroid-planetiod-meteoroid.html

Every once in a while, a meteor will be big enough to weather its fiery descent and land on Earth, where it earns the title "meteorite." Asteroids are also known as ...

Asteroids – Facts and Information about Asteroids - Space.com

www.space.com/51-asteroids-formation-discovery-and-exploration.html

Nov 21, 2014 ... Asteroids are small, airless rocky worlds that revolve around the sun and are too small to be called planets. They are also called space rocks, ...

What is an asteroid? :: NASA Space Place

spaceplace.nasa.gov/asteroid/

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.

www.ask.com/youtube?q=What Is a Asteroid?&v=emFJDUKmXH4
May 12, 2014 ... Asteroids are minor planets, especially those of the inner Solar System. The larger ones have also been called planetoids. These terms have ...

What are asteroids? | Cool Cosmos

coolcosmos.ipac.caltech.edu/ask/184-What-are-asteroids-

Asteroids are rocky-metallic objects which range in size from about the size of pebbles to around 600 miles (~1,000 km) across. Although they orbit the Sun, they ...

Asteroids - Astronomy For Kids - KidsAstronomy.com

www.kidsastronomy.com/asteroid.htm

An asteroid is a large rock in outer space. Some, like Ceres, can be very large, while others are as small as a grain of sand. Due to their smaller size, asteroids ...

What are Asteroids? - Universe Today

www.universetoday.com/asteroids/

Sep 9, 2015 ... 4.6 billion years ago, our Solar System formed from a collection of gas and dust surrounding our nascent Sun. While much of the gas and dust ...