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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

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

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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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

Giuseppe Piazzi discovered the first and largest asteroid, Ceres, on Jan. 1, 1801, while mapping stars. He found it orbiting in an area between Mars and Jupiter. Measuring 583 miles across, this almost spherical asteroid... 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

According to Yury Zaitsev, at Space Daily, an asteroid has a speed of about 55,923 miles per hour on average. Potential asteroid impacts on Earth have become a concern in recent years, with scientists suggesting the moni... More »

www.reference.com Science Astronomy Comets & Asteroids