Historical clue formulations

• Exploding stars — 2024-02-12
• Bright night lights — 2021-10-16
• Massive pop stars? — 2021-05-12
• Bursting stars — 2018-09-10
• Cosmic bursts — 2018-01-21
• Suddenly bright stars — 2017-11-20
• Pop stars? — 2014-07-13
• Compact Chevys of old — 2014-07-04
• Super stars — 2008-01-15
• Exploding stars — 2007-04-25
• Old Chevys — 2004-07-01
• Exploding stars — 1999-10-18
• Star bursts — 1998-06-19
• Some salmon — 1996-10-17