The week of June 29-July 5 takes us from Lunar Day 9 to Day 16. This week we will highlight Mare Imbrium, viewable throughout the week. Mare Imbrium: [±NW/F8] The Imbrium basin was created 3.9 billion years ago when an
The week of June 22-28 takes us from Lunar Day 2 to Day 8. This week we will highlight the crater Messier, viewable on Wednesday evening. Messier1: [SE/K14] One of my favorite objects on the Moon is a small pair
The week of June 15-21 takes us from Lunar Day 24 to New Moon. This week we will highlight the crater Gassendi, viewable early Tuesday morning. Gassendi: [SW/L5; L=40°W] Three generations of crater age can be easily observed on Mare
The week of June 8-14 takes us from Lunar Day 18 to Day 23. This week we will highlight Sinus Iridum, viewable early Sunday morning. Sinus Iridum: [NW/E6] Sinus Iridum (the Bay of Rainbows), located in the northwest sector of
The week of June 1-7 takes us from Lunar Day 10 to Day 17. This week we will highlight two rilles: Rima Hesiodus and Rimae Ramsden. Rima Hesiodus: [SW/N7-M8; L=20°W] The linear rille Rima Hesiodus is a graben (a special
The week of June 24-30 takes us from Day 21 to Day 27. This week we will highlight the crater Longomontanus, viewable on Tuesday and Wednesday in the very early morning. Longomontanus: [SW/P7] Take a look at Longomontanus, just southwest
The week of June 17-23 takes us from Day 15, full moon, to the end of Day 20. This week we will highlight an object informally referred to as “O’Neill’s Bridge,” viewable early Wednesday morning around 1:00 a.m. O’Neill’s Bridge:
The week of June 10-16 takes us from Day 8 to Day 14, one day before full moon. This week we will highlight the Apennine Mountains, viewable on Monday and Tuesday evenings. Montes Apenninus: [NW/H9-G10] The Apennine Mountain Range is
The week of June 3-9 takes us from New Moon to Lunar Day 7. This week we will highlight Rima Ariadaeus (the Ariadaeus Rille) viewable on Sunday evening, Lunar Day 7. Rima Ariadaeus: [NE/J11] The best place to see rilles
The week of June 25 – July 1 takes us from the end of Day 12, close to full moon, to Day 18. This week we will highlight Mons Rümker, viewable Monday, and the lunar swirl Reiner Gamma viewable all