Space

:This article is about space — the scientific and philosophical concepts. For other uses of space, see space (disambiguation).

Astronomy and space

In astronomy, space refers collectively to the relatively empty parts of the universe. Any area outside the atmospheres of any celestial body can be considered 'space'. Although space is certainly spacious, it is now known to be far from empty, and filled with a tenuous plasma. In particular, the boundary between space and Earth's atmosphere is conventionally set at the Karman line. See outer space.

Related Topics:
Astronomy - Universe - Atmosphere - Celestial body - Plasma - Earth's atmosphere - Karman line - Outer space

~ ~ ~ ~ ~ ~ ~ ~ ~ ~