LTYR
4 letters
Historical clue formulations
- Distance in astronomy: Abbr. — 2018-04-20
- Astronomer's unit: Abbr. — 2017-10-10
- Astronomical distance: Abbr. — 2015-06-18
- Astronomical meas. — 2014-10-28
- Astronomical distance: Abbr. — 2014-04-18
- Astronomical distance: Abbr. — 2012-05-20
- Astronomical distance: Abbr. — 2011-04-21
- Astronomical meas. — 2006-09-17
- A great dist. — 1997-07-13