Labels:text | font | white OCR: space 2 1. The expanse beyond the earth's atmosphere in which the Solar System, stars, and galaxies exist; the universe. 2. a. A set of elements or points satisfying give geometric postulates: a non-Euclidean space. b. The infinite three-dimensional extent in which all matter exists 3. a. A measurable interval or extent existing between tw or more points or bounded by limits in three dimensions: d