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en.wikipedia.org/wiki/Asteroid

Asteroids vary greatly in size, from almost ... The dwarf planet Ceres is by far the largest asteroid, with a diameter of 975 km (610 ...

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

Mar 16, 2017 ... But despite their size, asteroids can be dangerous. ... The average temperature of the surface of a typical asteroid is minus 100 degrees F ...

www.nasa.gov/mission_pages/asteroids/overview/fastfacts.html

Asteroid Facts. ... Every 2,000 years or so, a meteoroid the size of a football field hits Earth and causes significant damage to the area. ...... The developmental process of typical flight projects has a 36 month template, more than three times ...

solarsystem.nasa.gov/planets/asteroids/indepth

Asteroids, sometimes called minor planets, are rocky remnants left over from the ... than sometimes seen in Hollywood movies: on average, their separation is in ... asteroids, in which two rocky bodies of roughly equal size orbit each other, ...

nssdc.gsfc.nasa.gov/planetary/factsheet/asteroidfact.html

The image above is Ceres taken from the Dawn spacecraft. Below is a table of information on selected asteroids, and at the bottom of the page are comments on ...

www.reference.com/science/average-size-asteroids-2187be5f8268f8e8

Although NASA hasn't calculated an average, asteroids range in size from Ceres, measuring 590 miles in diameter, to smaller ones that measure less than a ...

nineplanets.org/asteroids.html

How do asteroids get pushed from their 'normal' orbits into Earth-crossing ones? What is the probability that a large comet or asteroid will hit the Earth in any ...

www.scienceclarified.com/scitech/Comets-and-Asteroids/Vital-Statistics-of-Asteroids-and-Comets.html

Like comets, they can vary greatly in size, shape, and composition. ... A typical example of such irregular asteroids is Eros, which NASA's NEAR-Shoemaker ...

www.wwu.edu/skywise/a101_asteroids.html

Most asteroids are the size of gravel but 16 asteroids have a diameter of 240 km or ... Since the orbital radius of the average asteroid in the asteroid belt closely ...

lasp.colorado.edu/education/outerplanets/spacejunk_asteroids.php

SUMMARY: Asteroids are small, rocky bodies that orbit the Sun much like ... In fact, while comets are the size of a typical city, asteroids are about the size of a ...