What are Asteroid belt??????
Asteroid belt
Main article: Asteroid belt
+ Si Yun
Image of the main asteroid belt and the Trojan asteroids.
Asteroids are mostly small solar system bodies that are composed in significant part of rocky and metallic non-volatile minerals.
The main asteroid belt occupies the orbit between Mars and Jupiter, between 2.3 and 3.3 AU from the Sun. It is thought to be the remnants from the Solar System's formation that failed to coalesce because of the gravitational interference of Jupiter. Asteroids range in size from hundreds of kilometers to as small as dust. All asteroids save the largest, Ceres, are classified as small solar system bodies; however, a number of other asteroids, such as Vesta and Hygieia, could potentially be reclassed as dwarf planets if it can be conclusively shown that they have achieved hydrostatic equilibrium. The asteroid belt contains tens of thousands - and potentially millions - of objects over one kilometre in diameter.[44] However, despite their large numbers, the total mass of the main belt is unlikely to be more than a thousandth of that of the Earth.[45] In contrast to its various depictions in science fiction, the main belt is very sparsely populated; spacecraft routinely pass through without incident. Asteroids with diameters between 10 and 10-4 m are called meteoroids. [46]
[edit] Solar System - Wikipedia, the free encyclopedia
Main article: Asteroid belt
+ Si Yun
Image of the main asteroid belt and the Trojan asteroids.
Asteroids are mostly small solar system bodies that are composed in significant part of rocky and metallic non-volatile minerals.
The main asteroid belt occupies the orbit between Mars and Jupiter, between 2.3 and 3.3 AU from the Sun. It is thought to be the remnants from the Solar System's formation that failed to coalesce because of the gravitational interference of Jupiter. Asteroids range in size from hundreds of kilometers to as small as dust. All asteroids save the largest, Ceres, are classified as small solar system bodies; however, a number of other asteroids, such as Vesta and Hygieia, could potentially be reclassed as dwarf planets if it can be conclusively shown that they have achieved hydrostatic equilibrium. The asteroid belt contains tens of thousands - and potentially millions - of objects over one kilometre in diameter.[44] However, despite their large numbers, the total mass of the main belt is unlikely to be more than a thousandth of that of the Earth.[45] In contrast to its various depictions in science fiction, the main belt is very sparsely populated; spacecraft routinely pass through without incident. Asteroids with diameters between 10 and 10-4 m are called meteoroids. [46]
[edit] Solar System - Wikipedia, the free encyclopedia
posted by cheryl at
8:40 PM
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