The exosphere is the region of the atmosphere above an altitude of 285 miles. The exosphere is the upper most layer of the earth's atmosphere; the only layer where atmospheric gases can escape into outer space.
- ↑ Wile, Dr. Jay L. Exploring Creation With Physical Science. Apologia Educational Ministries, Inc. 1999, 2000
- ↑ http://www.weather.gov/glossary/index.php?letter=e