The week of March 17-23 takes us from Lunar Day 18 to Day 24. This week we will highlight the moon craters Theophilus, Cyrillus, and Catharina, visible on Tuesday night close to the terminator. Theophilus, Cyrillus, Catharina: [SE/L12; L=24°E] This
The week of March 10-16 takes us from Lunar Day 11 to Day 17. This week we will highlight the moon craters Cleomedes and Proclus visible on Sunday night close to the terminator. Cleomedes: [NE/G15] Cleomedes is the first significant
The week of March 3-9 takes us from Lunar Day 4 to Day 10. This week we will highlight the moon craters Posidonius and le Monnier visible on Tuesday night. Posidonius/le Monnier: [NE/F-G13; L=30°E] There are only two craters of
The week of February 24 – March 2 takes us from Lunar Day 26 to Day 3. This week we will highlight the moon craters Langrenus & Vendelinus, visible on Sunday night. The Great Eastern Chain: [SE/K-N16; L=61°E] There is
The week of February 17-23 takes us from Lunar Day 20 to Day 26. This week we will highlight the moon craters Ptolemaeus, Alphonsus, and Arzachel, visible on Wednesday night near the terminator. Ptolemaeus, Alphonsus, Arzachel: [SW/K-L9; L=3°W] (These may
The week of February 10-16 takes us from Lunar Day 13 to Day 18. This week we will highlight the Cauchy Domes on the moon, visible on Sunday night near the terminator. Cauchy domes: [NE/J13; L=36°E] During sunrise over this
The week of February 3-9 takes us from Lunar Day 5 to Day 12. This week we will highlight the Apennine Mountains on the moon, visible on Thursday night close to the terminator. Montes Apenninus: The Apennine Mountain Range is
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 January 20-26 takes us from Lunar Day 21 to Day 27. This week we will highlight the Pytheas secondary moon craters, visible on Tuesday night and Wednesday night close to the terminator. Pytheas secondary craters: [NW/G7-8; L=19°W]
The week of January 13-19 takes us from Day 14 to Day 20. This week we will highlight Rupes Altai, visible on Saturday night. Altai Scarp (Rupes Altai): [SE/M12] Viewable even through small telescopes, the Altai Scarp is a spectacular