LAPLACE
| Date | Clue |
|---|---|
| 2018-03-29 | French astronomer/mathematician who wrote "Traité de Mécanique Céleste" |
| 2008-07-11 | "Mécanique Céleste" astronomer |
| 2007-03-17 | French astronomer who wrote the seminal "Celestial Mechanics" |
| 2001-04-14 | French pioneer in planetary orbital theory |