Space Exploration

"Space exploration, the investigation, by means of crewed and uncrewed spacecraft, of the reaches of the universe beyond Earth’s atmosphere and the use of the information so gained to increase knowledge of the cosmos and benefit humanity." (Encyclopædia Britannica, Inc., 2019)

Sources

"Space exploration". Encyclopædia Britannica, Encyclopædia Britannica, Inc. Last modified January 30, 2019.
https://www.britannica.com/science/space-exploration.
Accessed February 1, 2019.