The week of July 7-13 takes us from Day 13 to Day 19. This week we will highlight the moon crater Janssen, visible on Saturday and Sunday nights close to the terminator. Janssen: [SE/P13; L=40°E] Janssen is located 85 miles
The week of April 28-May 4 takes us from New Moon to Day 7. This week we will highlight Rima Ariadaeus, visible on Sunday night. Rima Ariadaeus: [Repeated from Day 6–NE/J11; L=14°E] The best place to see rilles on the
The week of March 24-30 takes us from Lunar Day 25 to Day 2. This week we will highlight the Rima Sirsalis, visible on Tuesday night close to the terminator. Rimae Sirsalis: [SW/L3-4; L=62°W] Just in from the southwest shore
The week of January 27 – February 2 takes us from Lunar Day 28 to Day 5. This week we will highlight Rupes Cauchy, visible on Sunday night close to the terminator. Rupes Cauchy: [NE/J13; L=37°E] Two of the best-known
The week of December 23-29 takes us from Lunar Day 23 to Day 29. This week we will highlight a feature called Rimae Sirsalis, visible on Thursday night. Rimae Sirsalis: [SW/L3-4; L=62°W] Just in from the southwest shore of Oceanus
The week of December 2 – December 8 takes us from Lunar Day 2 to Day 8. This week we will highlight Rima Hyginus, visible on Saturday night. Rima Hyginus: [NE/J10; L=8°E] At the west end of the Ariadaeus rille,
The week of July 29 – August 4 takes us from Day 24 to New Moon. This week we will highlight a series of rilles called Rimae Sirsalis, located in the SW quadrant of the Field Map and viewable on
The week of July 22-28 takes us from Day 17 to Day 23. This week we will highlight Rupes Cauchy, viewable on Wednesday night and located in the NE quadrant of the Field Map at J13. Rupes Cauchy: [NE/J13; L=37°
The week of June 24-30 takes us from Lunar Day 19 to Day 25. This week we will highlight Rima Ariadaeus, located near the western edge of Mare Tranquillitatis in the NE quadrant of the Field Map at J11. It
The week of May 27 – June 2 takes us from Day 20 to Day 26. This week we will highlight Rima Ariadaeus, viewable close to the terminator on Sunday evening, June 2, Day 26 and located in the NE