asteroid belt

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asteroid belt

(main belt) The zone near to the plane of the ecliptic and between the orbits of Mars and Jupiter that contains the majority of asteroids, known as main-belt asteroids. The edges are well-defined at distances from the Sun of about 1.7 and 4.0 AU respectively and the orbits are strongly concentrated in the plane of the ecliptic. Even so, the individual asteroids in the main belt are widely spaced. The orbital inclination becomes more scattered on moving through the belt. The average inclination is about 10° and the average eccentricity is 0.15. All the bodies are in direct motion. Occasional collisions between asteroids occur at velocities of about 5 km s–1. See also Kirkwood gaps.

asteroid belt

[′as·tə‚rȯid ‚belt]
(astronomy)
The region between 2.1 and 3.5 astronomical units from the sun where most of the asteroids are found.
References in periodicals archive ?
Nebulas and asteroid fields ooze with colours and effects to provide an experience that is superb.
Players also navigate their spaceship through asteroid fields and rescue astronauts from the moon's surface in two fast-paced games.
Sword fights are fought with light sabers; the airborne dogfights are through video-game friendly asteroid fields and otherworldly canyons; the Japanese master has green skin and pointy ears.
This optional control scheme gives players even more precise control as they navigate asteroid fields and waves of enemy lasers.
Also, because of its smaller form factor, pilots can easily dash through asteroid fields or even maneuver inside large structures.
Graphically, the game looks good, with battles taking place everywhere from open space to nebulae and asteroid fields.