Andrew Planck

Astronomer, Teacher, Musician

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Sabine & Ritter: Moon Craters West of the Apollo 11 Landing Site

Sabine & Ritter: Moon Craters West of the Apollo 11 Landing Site

The week of June 14-20 takes us from Lunar Day 4 to Day 11. This week we will highlight the craters Sabine & Ritter, located near the S.W. shore of Tranquillity. Sabine & Ritter: [NE/J11] About 60 miles west of

Andrew Planck June 14, 2021June 14, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in June No Comments Read more

Two Moon Craters of any Consequence on Mare Serenitatis: Posidonius and le Monnier

Two Moon Craters of any Consequence on Mare Serenitatis: Posidonius and le Monnier

The week of March 27-April 2 takes us from Lunar Day 29 to Day 6. The Moon will not be in a good position for viewing until Thurs. or Fri. This week we will highlight the craters Posidonius and le

Andrew Planck March 27, 2017March 27, 2017 Craters on the Moon, Lunar Days in March, Rilles on the Moon No Comments Read more

Moon Crater Timocharis Has Number of Complexities

Moon Crater Timocharis Has Number of Complexities

The week of March 20-26 takes us from Lunar Day 22 to Day 28, so the Moon is viewable only in the early morning hours. This week we will highlight the crater Timocharis in Mare Imbrium. Timocharis: [NW/G8] About three

Andrew Planck March 20, 2017March 20, 2017 Craters on the Moon, Equinox, Lunar Days in March 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)
  • Complex Moon Crater Pythagoras - November 3, 2025
  • Theophilus, Cyrillus, Catharina Moon Craters West of Mare Nectaris - October 27, 2025
  • Moon Crater Humboldt Best Viewed When Pronounced Libration - October 20, 2025
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