space noun definition in The universe topic from the Oxford Advanced Learner's Dictionary

space

 noun: The universe topic
1 (also outer space) [uncountable] the area outside the earth’s atmosphere where all the other planets and stars are the first woman in space the possibility of visitors from outer space the US space programme a space flight/mission2 [uncountable] the whole area in which all things exist and move It is quite possible that space and time are finite.