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Mare Crisium

The Flying Eagle on the Moon: Wrinkle Ridge Dorsum Oppel

wrinkle ridge Dorsum Oppel on the moon

The week of February 14-20 takes us from Day 13 to Day 19. This week we will highlight the wrinkle ridge Dorsum Oppel, a feature informally known as “the Flying Eagle,” viewable on Thursday & Friday night. The Flying Eagle:

Andrew Planck February 14, 2022February 14, 2022 Lunar Days in February, Uncategorized, Unusual Features on the Moon, Wrinkle Ridge on the moon No Comments Read more

Geminus and Burckhardt: Two Unique Moon Craters

moderately complex 55-mile moon crater Geminus

The week of January 17-23 takes us from Full Moon to Day 21. This week we will highlight the moon craters Geminus and Burckhardt, viewable on Tuesday and Wednesday nights. Geminus: [NE/F15] Roughly 200 miles north of Mare Crisium 1

Andrew Planck January 17, 2022January 16, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in January No Comments Read more

Peirce and Picard: Two Largest Intact Moon Craters on Mare Crisium

Peirce & Picard Intact Moon Craters

The week of January 3-9 takes us from Day 2 to Day 8. This week we will highlight the craters Peirce and Picard located in the NE quadrant of the Field Map and viewable on Wednesday evening. Peirce & Picard:

Andrew Planck January 3, 2022January 3, 2022 Dates to Observe Objects on the Moon, Intact Moon Craters, Lunar Days in January, Unusual Features on the Moon No Comments Read more

Moon Crater Proclus: One of the Brightest Spots on the Moon

Proclus is a small crater located just west of Mare Crisium

The week of December 20-26 takes us from Day 17 to Day 21. This week we will highlight the crater Proclus located in the NE quadrant of the Field Map at H14, the Ursid meteor shower, and the Winter Solstice.

Andrew Planck December 20, 2021December 20, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more

The Two Largest Intact Moon Craters: Peirce and Picard

Mare Crisium on the moon showing Peirce and Picard

The week of July 26 – August 1 takes us from Lunar Day 18 to Day 23. This week we will highlight the moon craters Peirce and Picard, viewable early Tuesday morning. Peirce & Picard: [NE/H15] The two largest intact

Andrew Planck July 26, 2021July 31, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in July No Comments Read more

Moon Craters Proclus and Aristillus

moon craters Aritillus and Proclus

The week of December 28 – January 3 takes us from Lunar Day 14 to 20. This week we will highlight the craters Proclus and Aristillus. Aristillus: [NE/F10] We were first introduced to Aristillus on Day 7 when its more

Andrew Planck December 28, 2020December 27, 2020 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more

Moon Craters Endymion and Geminus

moon craters Endymion and Geminus

The week of July 6-12 takes us from Lunar Day 17 to Day 22. This week we will highlight the craters Endymion and Geminus viewable on Monday and Tuesday nights. Endymion: [NE/D15; L=57°E] This is an older crater which somewhat

Andrew Planck July 6, 2020July 5, 2020 Craters on the Moon, Lunar Days in July No Comments Read more

Not Just on Star Trek: Moon Craters Peirce & Picard and the Wrinkle Ridge Dorsum Oppel

Peirce & Picard on the Moon

The week of December 23-29 takes us from Day 27 to Day 3. This week we will highlight the craters Peirce & Picard and the wrinkle ridge Dorsum Oppel, viewable on Sunday evening. Peirce & Picard: [NE/H15] The two largest

Andrew Planck December 23, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Ridges on the Moon, Unusual Features 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 Schickard has Stripes - May 11, 2026
  • Examples of Subsidence on the Moon: Moon Craters Posidonius and le Monnier - May 4, 2026
  • Endymion – Moon Crater - April 27, 2026
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