The week of May 31 – June 6 takes us from Lunar Day 21 to Day 27. This week we will highlight the Ariadaeus and Hyginus rills. Ariadaeus: [NE/J11; L=17°E] The Ariadaeus Rille (Rima Ariadaeus) is named after this 7-mi.
Furnerius A: Tiny Moon Crater That Can Splash its Debris Over Nearly Half of the Moon’s Surface
The week of May 24-30 takes us from Lunar Day 13 to Day 20. This week we will highlight the crater Furnerius A, viewable late Thursday evening. Furnerius A: [SE/N15] On Day 3 we introduced you to Furnerius A and
Where Angels Fear to Tread: Moon Crater Maurolycus
The week of May 17-23 takes us from Lunar Day 6 to Day 12. This week we will highlight the crater Maurolycus, viewable on Tuesday evening, Day 7. Maurolycus: [SE/P11] Let us venture briefly into a region where angels fear
Geminus and Burckhardt: Craters on the Moon
The week of May 10-16 takes us from Lunar Day 28 to Day 5. This week we will highlight the craters Geminus and Burckhardt, viewable on Friday evening. Geminus: [NE/F15] Roughly 200 miles north of Mare Crisium1, you will find
Ghost Crater on the Moon – Lamont
The week of May 25-31 takes us from Lunar Day 3 to Day 9. This week we will highlight the ghost crater Lamont. Lamont: [NE/J12] About 100 miles (1.5 arc-minutes) off the western shore of Tranquility is a remarkable series
Spot the Earliest Moon with the Naked Eye
The week of May 18-24 takes us from Lunar Day 26 to Day 2. This is not a good week for lunar observing, as the Moon is so close to the Sun (new moon is on Friday) but this week
Moon Craters Rima Hyginus and Mare Vaporum
The week of May 11-17 takes us from Lunar Day 20 to Day 25. This week we will highlight Rima Hyginus, viewable Wednesday morning, and Mare Vaporum, viewable Wednesday & Thursday mornings. Mare Vaporum: [NE/H10; L=4°E] Notice how there are
Rima Sirsalis: The Most Conspicuous Rille on the Moon
The week of May 4-10 takes us from Lunar Day 12 to Day 19. This week we will highlight the Sirsalis Rilles and the crater Galilaie, viewable on Tuesday evening. Rimae Sirsalis: [SW/L3-4] Just in from the southwest shore of
Significant Features of Moon Craters Cleomedes and Proclus
The week of May 20-26 takes us from Lunar Day 17 to Day 22. This week we will highlight the craters Cleomedes and Proclus, viewable after midnight on Monday. Cleomedes: [NE/G15] Cleomedes is the first significant crater just north of
720 Mile Wide Crater – Imbrium Basin
The week of May 13-19 takes us from lunar Day 9 to 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 asteroid 60