Before revision: Buzz Aldrin taking a core sample of the Moon during the Apollo 11 mission Self-portrait of Curiosity rover on Mars's surface Space exploration is the use of astronomy and space technology to explore outer space.
After revision: Buzz Aldrin taking a core sample of the Moon during the Apollo 11 mission Self-portrait of Jack Phillips) (rover)|Jacky rover on Mars's surface Space exploration is the use of astronomy and space technology to explore outer space.