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Month: May 2026

Moon Crater Clavius – Notch in Terminator

Clavius up close on the surface of the moon

The week of May 25-31 takes us from Day 9 to Day 15. This week we will highlight the moon crater Clavius, visible on Tuesday night close to the terminator. Clavius: [SW/Q8; L=14°W] If you catch the Moon at the

Andrew Planck May 25, 2026May 11, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters No Comments Read more

Maurolycus: Largest, Most Conspicuous Moon Crater in Lunar Highlands

moon crater Maurolycus

The week of May 18-24 takes us from Day 2 to Day 8.  This week we will highlight the moon crater Maurolycus, visible on Sunday night close to the terminator. Maurolycus: [SE/P11; L=14°E] Let us venture briefly into a region

Andrew Planck May 18, 2026May 11, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters No Comments Read more

Moon Crater Schickard has Stripes

Moon crater Schickard closer view on the surface of the moon

The week of May 11-17 takes us from Day 25 to Day 1.  This week we will highlight the moon crater Schickard, visible on Tuesday night close to the terminator. Schickard: [SW/P4; L=55°W] When you look at Schickard, you should

Andrew Planck May 11, 2026May 7, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May No Comments Read more

Examples of Subsidence on the Moon: Moon Craters Posidonius and le Monnier

Posidonius and le Monnier on the surface of the moon

The week of May 4-10 takes us from Day 18 to Day 24.  This week we will highlight the moon craters Posidonius & le Monnier, visible on Tuesday night close to the terminator. Posidonius/le Monnier: [NE/F-G13; L=30°E] There are only

Andrew Planck May 4, 2026May 4, 2026 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters, Subsidence on the Moon No Comments Read more

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It is highly recommended that you get a copy of Sky and Telescope's Field Map of the Moon, the very finest Moon map available for use at the telescope. It is available for $10.95 at www.skyandtelescope.com and on Amazon. All features mentioned in this blog will be keyed to the grid on the Field Map and will look like this: Plato: [NW/D9]

Credits: Courtesy of Gray Photography of Corpus Christi, Texas Lunar photos: NASA / USGS / BMDO / LROC / ASU / DLR / LOLA / Moon Globe. Used by permission

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Andrew Planck
Andrew Planck
Author and Astronomer Andrew Planck shepherds you to the moon and its mysteries of intrigue and surprise. Learn about the moon’s most fascinating objects, understand how the moon was formed and the names of many of the craters … and why they honor individuals who have changed the course of history.
Andrew Planck
Latest posts by Andrew Planck (see all)
  • Petavius: Floor-Fractured Crater on the Moon - October 12, 2026
  • Rimae Sirsalis – One of the Longest Rilles on the Moon - October 5, 2026
  • Moon Crater Aristoteles Adjoins the Moon Crater Mitchell to its Immediate East - September 28, 2026
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