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 The following events occurred in June 1961:
 
  
  
  
  
  
  
  
  This article incorporates text from this source, which is in the  public domain .Grimwood, James M. "PART III (A) Operational Phase of Project Mercury May 5, 1961 through May 1962". Project Mercury – A Chronology. NASA Special Publication-4001. NASA . Retrieved 9 February 2023.
 This article incorporates text from this source, which is in the  public domain .Grimwood, James M. "PART III (A) Operational Phase of Project Mercury May 5, 1961 through May 1962". Project Mercury – A Chronology. NASA Special Publication-4001. NASA . Retrieved 9 February 2023. This article incorporates text from this source, which is in the  public domain .Grimwood, James M.; Hacker, Barton C.; Vorzimmer, Peter J. "PART I (A) Concept and Design April 1959 through December 1961". Project Gemini Technology and Operations – A Chronology. NASA Special Publication-4002. NASA . Retrieved 18 February 2023.
 This article incorporates text from this source, which is in the  public domain .Grimwood, James M.; Hacker, Barton C.; Vorzimmer, Peter J. "PART I (A) Concept and Design April 1959 through December 1961". Project Gemini Technology and Operations – A Chronology. NASA Special Publication-4002. NASA . Retrieved 18 February 2023. This article incorporates text from this source, which is in the  public domain . "Space News Of Five Years Ago" (PDF). Space News Roundup. Vol. 5, no. 17. Houston, Texas: Manned Spacecraft Center, National Aeronautics and Space Administration. 10 June 1966. Page 6, columns 1–2. Archived from the original (PDF) on 5 March 2016. Retrieved 19 March 2023.
 This article incorporates text from this source, which is in the  public domain . "Space News Of Five Years Ago" (PDF). Space News Roundup. Vol. 5, no. 17. Houston, Texas: Manned Spacecraft Center, National Aeronautics and Space Administration. 10 June 1966. Page 6, columns 1–2. Archived from the original (PDF) on 5 March 2016. Retrieved 19 March 2023.