Mercury Seven

proper noun

NASA's first astronaut group, consisting of seven members, chosen in 1959: Scott Carpenter, Gordon Cooper, John Glenn, Gus Grissom, Wally Schirra, Alan Shepard, and Deke Slayton.

Meanings

proper nounthe Mercury Seven
  1. US space programNASA's first astronaut group, consisting of seven members, chosen in 1959: Scott Carpenter, Gordon Cooper, John Glenn, Gus Grissom, Wally Schirra, Alan Shepard, and Deke Slayton.
Cite this entry
APA

Mercury Seven. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/Mercury%20Seven

MLA

“Mercury Seven.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Mercury%20Seven. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “Mercury Seven,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/Mercury%20Seven.

Source: Mercury Seven on Wiktionary, CC BY-SA 4.0.