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Outer space, or just space, is the void that exists between celestial bodies, including Earth. .... The sparse density of matter in outer space means that electromagnetic radiation can travel great distances without being scattered: the mean free ...


Define outer space: space immediately outside the earth's atmosphere; broadly : interplanetary or interstellar space — outer space in a sentence.


Outer space definition, space beyond the atmosphere of the earth. See more.


outer space definition, meaning, what is outer space: the part of space that is very far away from Earth. Learn more.


Outer space definition: Outer space is the area outside the earth's atmosphere where the other planets and stars... | Meaning, pronunciation, translations and ...


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 ...


When a spacecraft travels beyond the Earth's atmosphere, it goes into outer space, which is generally defined as all the space in between every astronomical  ...


Definition of outer space written for English Language Learners from the Merriam -Webster Learner's Dictionary with audio pronunciations, usage examples, and ...


Synonyms for outer space at Thesaurus.com with free online thesaurus, antonyms, and definitions. Dictionary and Word of the Day.