Andrew Planck

Astronomer, Teacher, Musician

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Rupes Recta

Rupes Cauchy and Rupes Recta – Best Known Faults on the Moon

Rupes Cauchy and Rupes Recta – Best Known Faults on the Moon

The week of January 27 – February 2 takes us from Lunar Day 28 to Day 5. This week we will highlight Rupes Cauchy, visible on Sunday night close to the terminator. Rupes Cauchy: [NE/J13; L=37°E] Two of the best-known

Andrew Planck January 27, 2025January 27, 2025 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in February, Lunar Days in January, Rilles on the Moon No Comments Read more

Rupes Cauchy and Rupes Recta: Both are Paralleled by a Nearby Rille

Rupes Cauchy and Rupes Recta: Both are Paralleled by a Nearby Rille

The week of September 16-22 takes us from Day 13 to Day 21. This week we will highlight Rupes Cauchy, viewable on Friday and Saturday nights, located in the NE quadrant of the Field Map at J13. Rupes Cauchy: [NE/J13;

Andrew Planck September 16, 2024August 31, 2024 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in September No Comments Read more

Rupes Cauchy: A Best Known Fault on the Moon

Rupes Cauchy: A Best Known Fault on the Moon

The week of July 22-28 takes us from Day 17 to Day 23. This week we will highlight Rupes Cauchy, viewable on Wednesday night and located in the NE quadrant of the Field Map at J13. Rupes Cauchy: [NE/J13; L=37°

Andrew Planck July 22, 2024July 19, 2024 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in July, Rilles on the Moon No Comments Read more

Two of the Best-Known Faults on the Moon

Two of the Best-Known Faults on the Moon

The week of May 8-14 takes us from Day 18 to Day 24. This week we will highlight Rupes Cauchy, a fault on the moon, viewable on Tuesday before sunrise. Rupes Cauchy: [NE/J13; L=37°E] Two of the best-known faults on

Andrew Planck May 8, 2023April 22, 2023 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in May, Rilles on the Moon, Saturn No Comments Read more

Rupes Recta and Rupes Cauchy: Two of the Best-Known Faults on the Moon

Rupes Recta and Rupes Cauchy: Two of the Best-Known Faults on the Moon

The week of December 26 – January 1 takes us from Lunar Day 4 to Day 10. This week we will highlight the fault Rupes Cauchy located on the moon in the NE quadrant of the Field Map and viewable

Andrew Planck December 26, 2022December 20, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in December, Rilles on the Moon No Comments Read more

Apennine Mountain Range and Rupes Recta, the Straight Wall, on the Moon

Apennine Mountain Range and Rupes Recta, the Straight Wall, on the Moon

The week of October 31 – November 6 takes us from Lunar Day 7 to Day 13. This week we will highlight the Apennine Mountain range, located on the Field Map at [NW/G9] and viewable Tuesday evening, and Rupes Recta,

Andrew Planck October 31, 2022October 28, 2022 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in November, Lunar Days in October No Comments Read more

Straight Wall (Rupes Recta): Two of the Best-Known Faults on the Moon

Straight Wall (Rupes Recta): Two of the Best-Known Faults on the Moon

The week of September 7 – October 3 takes us from Day 20 to Day 27. This week we will highlight Rupes Recta, the Straight Wall, viewable on Tuesday, Day 22, after midnight. Straight Wall: (Rupes Recta): [SW/M9] Two of

Andrew Planck September 27, 2021September 26, 2021 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in September, Rilles on the Moon No Comments Read more

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