Andrew Planck

Astronomer, Teacher, Musician

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Antares

Trio of Moon Craters with Distinct Personalities

Trio of Moon Craters with Distinct Personalities

The week of April 22-28 takes us from Day 14 to Day 19. This week we will highlight the moon craters Theophilus, Cyrillus, and Catharina viewable on Sunday morning before sunrise and located in the SE quadrant of the Field

Andrew Planck April 22, 2024April 18, 2024 chain of moon craters, Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April, Moon craters No Comments Read more

Rima Ariadaeus – Rille on the Moon that is a Graben

Rima Ariadaeus – Rille on the Moon that is a Graben

The week of August 21-27 takes us from Day 5 to Day 11. This week we will highlight Rima Ariadaeus on the moon, viewable Tuesday night. Rima Ariadaeus: NE/J11; L=14°E] The best place to see rilles on the Moon is

Andrew Planck August 21, 2023September 11, 2023 Dates to Observe Objects on the Moon, Lunar Days in August, Rilles 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)
  • Moon Crater Cassini – Created on Imbrium floor Before Lavas Started to Flow - January 19, 2026
  • Bailly – Largest Crater on Our Side of the Moon - January 12, 2026
  • Longomontanus: Exception to the Rule About Moon Crater Age - January 5, 2026
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