Historical clue formulations

• The "S" of NASA — 2025-12-29
• "The final frontier" — 2024-10-22
• "___ is to place as eternity is to time": Joseph Joubert — 2024-08-11
• Astronaut's realm — 2023-05-15
• ____ bar — 2022-06-05
• "The final frontier" — 2020-08-26
• Remote station location — 2020-06-12
• Elbow room — 2019-08-22
• #, to a proofreader — 2019-06-09
• Breathing room — 2019-03-26
• The final frontier, per "Star Trek" — 2018-10-22
• The "S" of NASA — 2018-02-27
• What " " contains — 2017-11-16
• It's out of this world — 2017-05-04
• Result of hitting the bar? — 2016-06-05
• It's below "C V B N M" — 2016-01-21
• "The breath of art," per Frank Lloyd Wright — 2015-10-23
• See 25-Across — 2015-10-17
• The heavens — 2015-06-18
• "I need my ___" — 2014-09-10
• See 13-Across — 2013-09-24
• Go into la-la land, with "out" — 2012-01-08
• Zone (out) — 2011-08-25
• Opportunity for privacy — 2011-02-25
• It's just below a B — 2011-02-20
• Gap — 2010-09-28
• Rocket's realm — 2007-12-10
• Vacuum — 2007-08-02
• "The final frontier" — 2006-01-16
• "The final frontier" — 2005-02-07
• Breathing room — 2003-07-29
• See 1-Across — 2003-01-16
• "The final frontier" — 2002-12-02
• Reserved seat — 2002-09-21
• #, to a proofreader — 2002-05-21
• Gap — 2000-06-18
• "The final frontier" — 2000-06-13
• #, to a typesetter — 2000-01-05
• Extraterrestrial realm — 1999-10-25
• "The final frontier" — 1999-07-28
• Parker's need — 1999-06-27
• Elbowroom — 1999-05-05
• "Star Trek" setting — 1999-02-03
• Elbowroom — 1998-12-02
• Margin — 1998-10-24
• 1982 Michener epic — 1998-05-17
• Berth — 1998-02-14
• 1982 Michener epic — 1997-08-29
• Part of NASA — 1997-07-29
• "The final frontier" — 1997-03-25