Outer space
This is an old revision of this page, as edited by Ed Poor (talk | contribs) at 13:03, April 18, 2007. It may differ significantly from current revision.
Outer space is the physical realm beyond the Earth's atmosphere. It is mostly empty and apparently boundless.
In space, sound cannot travel because there is not enough air. Space is a nearly perfect vacuum. The few stray molecules floating about in space are much too far apart to transmit sound waves.