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The average temperature of an asteroid is -100 degrees Fahrenheit. Asteroids are also known as minor planets that typically revolve around the sun. More »

www.reference.com Science Astronomy Comets & Asteroids

The term "doomsday asteroid" is usually applied to an asteroid that, if it impacted Earth, would cause sufficient destruction to significantly disrupt the balance of life and possibly cause major extinctions. Such an ast... More »

www.reference.com Science Astronomy Comets & Asteroids

Asteroid composition varies based on the asteroid's origin. An asteroid can contain rock, metal, clay, silicate, nickel, iron and water. All asteroids are covered in regolith, which is a rocky rubble. Regolith is commonl... More »

www.reference.com Science Astronomy Comets & Asteroids
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Ceres is the biggest asteroid with a diameter of approximately 590 miles. It was discovered by Giuseppe Piazzi in 1801, though he considered it a planet. Ceres is spherical in shape and orbits the sun between Mars and Ju... More »

www.reference.com Science Astronomy Comets & Asteroids

Earth has been hit by asteroids many times throughout its history. Space.com states there were 26 observed explosions attributed to asteroid strikes between the years 2000 and 2013. More »

www.reference.com Science Astronomy Comets & Asteroids

Asteroids have an average speed of 25 kilometers per second or roughly 15.5 miles per second. This measurement comes from scientists who monitor asteroids in earth's vicinity. More »

www.reference.com Science Astronomy Comets & Asteroids

The asteroid belt lying between Mars and Jupiter consists of a ring approximately 184 million miles wide, extending from 186 million miles from the sun to 370 million miles from the sun. Tens of thousands of objects orbi... More »

www.reference.com Science Astronomy Comets & Asteroids