"Mercury Seven" meaning in English

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  "lang_code": "en",
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      "glosses": [
        "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."
      ],
      "id": "en-Mercury_Seven-en-name-HAiY-14H",
      "wikipedia": [
        "Alan Shepard",
        "Deke Slayton",
        "Gordon Cooper",
        "Gus Grissom",
        "John Glenn",
        "Scott Carpenter",
        "Wally Schirra"
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  "word": "Mercury Seven"
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  "lang_code": "en",
  "pos": "name",
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        "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."
      ],
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        "Alan Shepard",
        "Deke Slayton",
        "Gordon Cooper",
        "Gus Grissom",
        "John Glenn",
        "Scott Carpenter",
        "Wally Schirra"
      ]
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  "word": "Mercury Seven"
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