Historical clue formulations

• Word repeated before "little star," in a nursery rhyme — 2019-10-22
• What stars do — 2018-07-07
• When repeated, what little stars do — 2018-04-03
• What stars do — 2011-02-16
• Glimmer — 2010-12-22
• With 25-Down, start of a nighttime nursery rhyme — 2009-11-17
• See 39-Across — 2009-11-17