The week of August 20-26 takes us from Day 10 to Day 15, full Moon. This week we will highlight a series of rilles: Rima Hesiodus (visible Monday night), and the Hippalus and Ramsden rilles. visible on Tuesday. Rima Hesiodus:
Rilles on the Moon and Their Characteristics
![Rilles on the Moon and Their Characteristics Rilles on the Moon and Their Characteristics](http://andrewplanck.com/wp-content/uploads/2018/08/Rimae-Hippalus-640x350.png)