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