Andrew Planck

Astronomer, Teacher, Musician

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Ariadaeus Rille

A Graben on the Moon: Rima Ariadaeus

A Graben on the Moon: Rima Ariadaeus

The week of April 28-May 4 takes us from New Moon to Day 7. This week we will highlight Rima Ariadaeus, visible on Sunday night. Rima Ariadaeus: [Repeated from Day 6–NE/J11; L=14°E] The best place to see rilles on the

Andrew Planck April 28, 2025April 5, 2025 Dates to Observe Objects on the Moon, Lunar Days in April, Rilles on the Moon No Comments Read more

Moon Crater Rima Hyginus – Line of Linked Craters

Moon Crater Rima Hyginus – Line of Linked Craters

The week of December 2 – December 8 takes us from Lunar Day 2 to Day 8. This week we will highlight Rima Hyginus, visible on Saturday night. Rima Hyginus: [NE/J10; L=8°E] At the west end of the Ariadaeus rille,

Andrew Planck December 2, 2024November 21, 2024 chain of moon craters, Craters on the Moon, Lunar Days in December, Moon craters, Rilles on the Moon No Comments Read more

Rimae Triesnecker – Series of Rilles on the Moon

Rimae Triesnecker – Series of Rilles on the Moon

The week of October 16-22 takes us from Day 2 to Day 8. This week we will highlight a series of rilles on the moon called Rimae Triesnecker, viewable on Saturday evening. Triesnecker Rilles: [NE/J10; L=5°E] What a great place

Andrew Planck October 16, 2023October 16, 2023 Dates to Observe Objects on the Moon, Lunar Days in October, Rilles on the Moon No Comments Read more

Enigma of the Moon – Triesnecker Rilles

Enigma of the Moon – Triesnecker Rilles

The week of September 18-24 takes us from Day 27 to Day 10. This week we will highlight the Triesnecker Rilles, an enigma located on the moon in the NE quadrant of the Field Map at J10 and viewable on

Andrew Planck September 18, 2023September 15, 2023 Dates to Observe Objects on the Moon, Lunar Days in September, Rilles on the Moon No Comments Read more

Rima Hyginus: A Line of Linked Moon Craters

Rima Hyginus: A Line of Linked Moon Craters

The week of September 4 – September 10 takes us from Day 20 to Day 26. This week we will highlight Rima Hyginus, viewable on Tuesday before midnight. Rima Hyginus: [NE/J10; L=8°E] At the west end of the Ariadaeus rille,

Andrew Planck September 4, 2023August 31, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Rilles on the Moon No Comments Read more

Rima Ariadaeus – Ariadaeus Rille

Rima Ariadaeus – Ariadaeus Rille

The week of February 20-26 takes us from Lunar Day 1 to Day 7. This week we will highlight Rima Ariadaeus, located in the NE quadrant of the Field Map and viewable on Sunday night. Ariadaeus: [NE/J11; L=17°E] The Ariadaeus

Andrew Planck February 20, 2023February 18, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February, Moon craters, Rilles on the Moon, Venus No Comments Read more

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