Andrew Planck

Astronomer, Teacher, Musician

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Cleomedes

Cleomedes: First Significant Moon Crater North of Mare Crisium

Cleomedes: First Significant Moon Crater North of Mare Crisium

The week of September 1-7 takes us from Day 10 to Day 16. This week we will highlight the moon crater Cleomedes, visible on Sunday night. Cleomedes: [NE/G15; L=56°E] Cleomedes is the first significant moon crater just north of Mare

Andrew Planck September 1, 2025August 28, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Moon craters, Rilles on the Moon No Comments Read more

Moon Craters Cleomedes and Proclus

Moon Craters Cleomedes and Proclus

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

Andrew Planck March 10, 2025March 6, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Moon craters No Comments Read more

Mare Crisium Result from Impact of Large Meteor 3.9 Billion Years Ago

Mare Crisium Result from Impact of Large Meteor 3.9 Billion Years Ago

The week of October 10-16 takes us from Lunar Day 16 to Day 22. This week we will highlight Mare Crisium, viewable Tuesday evening. Mare Crisium: [NE/H15] On Day 17 you should be able to observe Crisium’s complexities more successfully

Andrew Planck October 10, 2022October 10, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in October 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
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