The underlying Earth surface images used throughout this site are a subset of the Face of the EarthTM © 1996, ARC Science simulations.
| Small Comets |
Every few seconds a "snowball" the size of a small house breaks up as it approaches Earth and deposits a large cloud of water vapor in Earth's upper atmosphere. |
|
|
|
Last Updated: Sunday, 17-Sep-06 at 11:19:26 AM
This document has been accessed a total of 455,511 times.