Andrew Planck

Astronomer, Teacher, Musician

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Unusual Features on the Moon

The Flying Eagle on the Moon – Western Edge of Mare Crisium

The Flying Eagle on the Moon – Western Edge of Mare Crisium

The week of June 17-23 takes us from Lunar Day 11 to Day 17. This week we will highlight an object informally known as the Flying Eagle on the moon, located on the western edge of Mare Crisium and in

Andrew Planck June 17, 2024June 12, 2024 Lunar Days in June, Unusual Features on the Moon No Comments Read more

Moon Crater Schickard – Floor has Stripes

Moon Crater Schickard – Floor has Stripes

The week of May 1-7 takes us from Day 11 to Day 17. This week we will highlight the moon crater Schickard, viewable on Tuesday night and located in the SW quadrant of the Field Map. Schickard: [SW/P4; L=55°W] When

Andrew Planck May 1, 2023May 1, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Meteor Shower, Moon craters, Unusual Features on the Moon No Comments Read more

Maurolycus – Largest and Most Conspicuous Moon Crater in Lunar Highlands

Maurolycus – Largest and Most Conspicuous Moon Crater in Lunar Highlands

The week of December 12 – 18 takes us from Lunar Day 19 to Day 25. This week we will highlight the moon crater Maurolycus, located in the SE quadrant of the Field Map and viewable Tuesday evening around 11:00pm.

Andrew Planck December 12, 2022December 7, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Unusual Features on the Moon No Comments Read more

Moon Crater Gutenberg – Unusual Sequence of Moon Crater Development

Moon Crater Gutenberg – Unusual Sequence of Moon Crater Development

The week of December 5 – 11 takes us from Lunar Day 13 to Day 19. This week we will highlight the moon crater Gutenberg, located in the SE quadrant of the Field Map. Gutenberg: [SE/K14; L=41°E] Gutenberg crater is

Andrew Planck December 5, 2022December 6, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Uncategorized, Unusual Features on the Moon No Comments Read more

Wrinkle Ridge Dorsum Oppel on the Moon and the Lunar Eclipse

Wrinkle Ridge Dorsum Oppel on the Moon and the Lunar Eclipse

The week of November 7-13 takes us from Lunar Day 15 to Day 20. This week we will highlight the wrinkle ridge Dorsum Oppel on the moon and the lunar eclipse. Dorsum Oppel: [NE/H15; L=53°E] As the lava cooled following

Andrew Planck November 7, 2022November 9, 2022 Lunar Days in November, Lunar Eclipse, Lunar Observers, Unusual Features on the Moon, Wrinkle Ridge on the moon No Comments Read more

Arago: Unusual Moon Crater and Pair of Large Domes

Arago: Unusual Moon Crater and Pair of Large Domes

The week of October 24 – 30 takes us from Lunar Day 29 to Day 6. This week we will highlight: Arago: [NE/J12; L=21°E] About 50 miles from the western shore of Tranquillity you will find the crater Arago (16

Andrew Planck October 24, 2022October 22, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Domes on the Moon, Lunar Days in October, Unusual Features on the Moon No Comments Read more

Moon Crater Schickard Has Unusual Feature

Moon Crater Schickard Has Unusual Feature

The week of September 19-25 takes us from Lunar Day 24 to New Moon. This week we will highlight the moon crater Schickard, viewable early Tuesday and Wednesday mornings, and Jupiter and Saturn, viewable throughout the week. Schickard: [SW/P4] When

Andrew Planck September 19, 2022September 19, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Unusual Features on the Moon No Comments Read more

Pythagoras: Complex Moon Crater with Two Central Mountain Peaks

Pythagoras: Complex Moon Crater with Two Central Mountain Peaks

This week we will highlight the moon crater Pythagoras, viewable on Tuesday evening. Pythagoras1 : [NW/C3; L=63°W] There is only a brief period during each lunation when Pythagoras is visible. It is a complex crater with two central mountain peaks,

Andrew Planck July 11, 2022July 11, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in July, Unusual Features on the Moon No Comments Read more

“Valentine Dome” on the Moon located near Mare Serenitatus

“Valentine Dome” on the Moon located near Mare Serenitatus

This week we will highlight a feature informally called the “Valentine Dome” located in the N.W. section of Mare Serenitatus. Valentine Dome: [NE/F11; L=10°E] Keep a close eye on the movement of the terminator, and when it just touches the

Andrew Planck July 4, 2022June 29, 2022 Domes on the Moon, Lunar Days in July, Unusual Features on the Moon No Comments Read more

The Flying Eagle on the Moon – Wrinkle Ridge Dorsum Oppel

The Flying Eagle on the Moon – Wrinkle Ridge Dorsum Oppel

This week we will highlight the wrinkle ridge Dorsum Oppel, a feature informally known as “the Flying Eagle,” viewable on Saturday evening. The Flying Eagle: [NE/H15] As the lava cooled following the impact that created Mare Crisium, a series of

Andrew Planck June 27, 2022 Lunar Days in June, Unusual Features on the Moon, Wrinkle Ridge 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 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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