Historical clue formulations

• Magnificent — 2018-09-11
• With 45-Down, effect used by astronomers to measure distance — 2017-12-14
• Compliment for a planetarium? — 2015-12-29
• Out of this world — 2015-07-18
• Outstanding — 2015-06-05
• First-rate — 2013-04-03
• Really, really good — 2013-03-13
• Exemplary — 2011-01-16
• Top-notch — 2008-08-20
• Out of this world — 2006-06-18
• Top-notch — 2006-05-26
• Brilliant — 2003-04-06
• Stupendous — 1999-07-21
• First-rate — 1998-12-06
• Outstanding — 1995-10-30
• Outstanding — 1994-11-25
• Brilliant — 1994-10-12