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Any region of space beyond limits determined with reference to the boundaries of a celestial body or system, especially:
a. The region of space immediately beyond Earth's atmosphere.
b. Interplanetary or interstellar space.
(Astronomy) (not in technical usage) any region of space beyond the atmosphere of the earth
1. space beyond the atmosphere of the earth.
2. deep space.
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|Noun||1.||outer space - any location outside the Earth's atmosphere; "the astronauts walked in outer space without a tether"; "the first major milestone in space exploration was in 1957, when the USSR's Sputnik 1 orbited the Earth"|
location - a point or extent in space
infinite, space - the unlimited expanse in which everything is located; "they tested his ability to locate objects in space"; "the boundless regions of the infinite"
interplanetary space - the part of outer space within the solar system
interstellar space - the space between stars
intergalactic space - the space between galaxies; "the Milky Way travels through intergalactic space"
deep space - any region in space outside the solar system
aerospace - the atmosphere and outer space considered as a whole