Exosphere: Difference between revisions
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The '''exosphere''' is the outermost layer of Earth's atmosphere. Its lower limit is the ''exobase'' at about 500 km above Earth's surface. | The '''exosphere''' is the outermost layer of [[Earth]]'s [[atmosphere]]. Its lower limit is the ''exobase'' at about 500 km above the Earth's surface. | ||
The exosphere is so thin that particles within it ( | The exosphere is so thin that particles within it ([[atom]]s, [[molecule]]s, or [[ion]]s) do not collide. As a result, particles in the exosphere can escape altogether from Earth's atmosphere into [[space]]. | ||
Revision as of 04:08, 13 October 2007
The exosphere is the outermost layer of Earth's atmosphere. Its lower limit is the exobase at about 500 km above the Earth's surface.
The exosphere is so thin that particles within it (atoms, molecules, or ions) do not collide. As a result, particles in the exosphere can escape altogether from Earth's atmosphere into space.