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The following events occurred in December 1963:
 
  
  
  
  This article incorporates text from this source, which is in the  public domain .Grimwood, James M.; Hacker, Barton C.; Vorzimmer, Peter J. "PART II (A) Development and Qualification January 1963 through December 1963". Project Gemini Technology and Operations – A Chronology. NASA Special Publication – 4002. NASA. Archived from the original on 21 February 2023. Retrieved 24 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 II (A) Development and Qualification January 1963 through December 1963". Project Gemini Technology and Operations – A Chronology. NASA Special Publication – 4002. NASA. Archived from the original on 21 February 2023. Retrieved 24 February 2023. This article incorporates text from this source, which is in the  public domain .Brooks, Courtney G.; Ertel, Ivan D.; Newkirk, Roland W. "Part I: Early Space Station Activities – January 1963 to July 1965.". SkyLab: A Chronology. NASA Special Publication – 4011. NASA. pp. 28–29. Retrieved 14 March 2023.
 This article incorporates text from this source, which is in the  public domain .Brooks, Courtney G.; Ertel, Ivan D.; Newkirk, Roland W. "Part I: Early Space Station Activities – January 1963 to July 1965.". SkyLab: A Chronology. NASA Special Publication – 4011. NASA. pp. 28–29. Retrieved 14 March 2023.Selena's brother, producer/songwriter A.B. Quintanilla III talks to Billboard for the 20th anniversary of the singer's death.