The week of May 29 – June 4 takes us from Day 10 to Day 16. This week we will highlight the Hippalus rilles, viewable on Tuesday evening. Rimae Hippalus: [SW/M6; L=29°W] On the east shore of Mare Humorum you
Moon Crater Hippalus: Finest Examples of Arcuate Rilles
![Moon Crater Hippalus: Finest Examples of Arcuate Rilles Moon Crater Hippalus: Finest Examples of Arcuate Rilles](http://andrewplanck.com/wp-content/uploads/2023/05/Hippalus-Rilles.png)