2.NounAny 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; sometimes, space beyond Earth's solar system.
"Astronauts train for years before traveling to outer space.; The telescope captured incredible images from outer space.; Science fiction often imagines alien civilizations in the depths of outer space."
3.NounA bluish shade of black.
"outer space (Pantone): ; outer space (Crayola): "