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Definition of Outer space
1. Noun. Any location outside the Earth's atmosphere. "The first major milestone in space exploration was in 1957, when the USSR's Sputnik 1 orbited the Earth"
Exact synonyms: Space
Generic synonyms: Location, Infinite, Space
Terms within: Interplanetary Space, Interstellar Space, Intergalactic Space, Deep Space
Group relationships: Aerospace
Generic synonyms: Location, Infinite, Space
Terms within: Interplanetary Space, Interstellar Space, Intergalactic Space, Deep Space
Group relationships: Aerospace
Definition of Outer space
1. Noun. Region outside explored space. ¹
2. Noun. Any region of space beyond limits determined with reference to boundaries of a celestial system or body, especially the region of space immediately beyond Earth's atmosphere ¹
3. Noun. A bluish shade of black ¹
¹ Source: wiktionary.com