Andrew Planck

Astronomer, Teacher, Musician

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Charles Messier

Small Pair of Moon Craters – Messier and Messier A

Small Pair of Moon Craters – Messier and Messier A

The week of May 26 – June 1 takes us from Day 29 to Day 6. This week we will highlight the moon crater Messier, visible on Friday and Saturday nights. Messier: [SE/K14; L=48°E] One of my favorite objects on

Andrew Planck May 26, 2025May 23, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters No Comments Read more

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

Moon Crater Messier: Pair of Splash Rays that Resemble the Tails of a Comet

Moon Crater Messier: Pair of Splash Rays that Resemble the Tails of a Comet

The week of Nov. 5-11 takes us from Day 28 (almost New Moon) to Day 4. This week we will highlight the crater Messier, viewable on Sunday during deep twilight (catch it before the Moon gets too low). Messier1: [SE/K14]

Andrew Planck November 5, 2018November 5, 2018 Craters on the Moon, Dates to Observe Objects on the Moon, Jupiter, Lunar Days in November, Saturn 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 Maurolycus in the Lunar Highlands - July 14, 2025
  • Moon Crater Janssen Located 85 miles Southwest of the Rheita Valley - July 7, 2025
  • Albategnius – How to Observe This Stunning Moon Crater Near the Terminator - June 30, 2025
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