Changes

The '''Asteroid Belt''' is a large toroidal region in the inner [[Solar system]] with a [[heliocentric]] distance of between 2 and 4 [[astronomical unit]]s containing nearly two million minor planets <ref>http://www.spaceref.com/news/viewpr.html?pid=7925</ref>, or [[asteroids]] rather than a major rocky body like the [[Earth]] or [[Mars]].

The '''Asteroid Belt''' is a large toroidal (doughnut-shaped) region in the inner [[Solar system]] with a [[heliocentric]] distance of between 2 and 4 [[astronomical unit]]s containing nearly two million minor planets <ref>http://www.spaceref.com/news/viewpr.html?pid=7925</ref>, or [[asteroids]] rather than a major rocky body like the [[Earth]] or [[Mars]].

== References ==

== References ==