Andrew Planck

Astronomer, Teacher, Musician

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Mare Crisium

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

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

The week of April 14-20 takes us from Lunar Day 17 to Day 22. This week we will highlight moon craters Peirce and Picard, visible on Saturday night. Peirce & Picard: [NE/H15; L=54°E] The two largest intact moon craters on

Andrew Planck April 14, 2025April 5, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April, Moon craters No Comments Read more

Moon Craters Cleomedes and Proclus

Moon Craters Cleomedes and Proclus

The week of March 10-16 takes us from Lunar Day 11 to Day 17. This week we will highlight the moon craters Cleomedes and Proclus visible on Sunday night close to the terminator. Cleomedes: [NE/G15] Cleomedes is the first significant

Andrew Planck March 10, 2025March 6, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Moon craters No Comments Read more

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

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

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

The week of April 17-April 23 takes us from Day 27 to Day 4. This week we will highlight the craters Peirce & Picard, located in the western portion of Mare Crisium and viewable on Sunday evening. Peirce & Picard:

Andrew Planck April 17, 2023April 13, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April, Wrinkle Ridge on the moon No Comments Read more

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

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

The week of January 9 to January 15 takes us from Lunar Day 17 to Day 22. This week we will highlight the moon crater Proclus, near Mare Crisium. Proclus: [NE/H14; L=47°E] Proclus is a small moon crater located just

Andrew Planck January 9, 2023January 4, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in January 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

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

Promontorium Agarum and the First Supermoon of 2022

Promontorium Agarum and the First Supermoon of 2022

The week of June 13-19 takes us from Day 14 to Day 20. This week we will highlight the feature known as Promontorium Agarum on Mare Crisium, viewable in the early morning hours of Wednesday, June 15. Promontorium Agarum: [NE/H16;

Andrew Planck June 13, 2022June 13, 2022 Dates to Observe Objects on the Moon, Lunar Days in June, 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

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

Geminus and Burckhardt: Two Unique Moon Craters

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
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