The week of Aug. 23-29 takes us from Lunar Day 17 to Day 22. This week we will highlight the craters Posidonius and le Monnier, viewable late Thurs. night. Posidonius/le Monnier: [NE/F-G13] There are only two craters of any consequence
Moon Craters on Mare Serenitatis: Posidonius and le Monnier
