[[Image:Atmosphere layers-en.svg|thumb|The boundaries between the Earth's surface and outer space, at the [[Kármán line]], 100 km (62 mi) and [[exosphere]] at 690 km (430 mi).]]
'''Outer spaceඅභ්යාවකාශය''' (oftensimplyEn called= Outer '''space''') isයනු the void that exists beyond any [[celestial body]] including the Earth.<ref>[http://space.about.com/od/glossaries/g/outerspace.htm Nick Greene, about.com, Outer Space]</ref> It is not completely empty (i.e. a [[vacuum|perfect vacuum]]), but contains a low density of particles, predominantly [[hydrogen]] [[plasma (physics)|plasma]], as well as [[electromagnetic radiation]], [[magnetic field]]s, and [[cosmic neutrino background|neutrinos]]. Theoretically, it also contains [[dark matter]] and [[dark energy]].
