Andrew Planck

Astronomer, Teacher, Musician

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Mare Imbrium

Sinus Iridum – Bay of Rainbows on the Moon

Sinus Iridum – Bay of Rainbows on the Moon

The week of April 7-13 takes us from Lunar Day 10 to Day 16. This week we will highlight Sinus Iridum, visible on Tuesday night close to the terminator. Sinus Iridum: [NW/E6; L=32°W] Sinus Iridum (the Bay of Rainbows), located

Andrew Planck April 7, 2025April 3, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April, Moon craters, Uncategorized No Comments Read more

Apennine Mountain Range – Result of Impact that Created Imbrium Basin on the Moon

Apennine Mountain Range – Result of Impact that Created Imbrium Basin on the Moon

The week of February 3-9 takes us from Lunar Day 5 to Day 12. This week we will highlight the Apennine Mountains on the moon, visible on Thursday night close to the terminator. Montes Apenninus: The Apennine Mountain Range is

Andrew Planck February 3, 2025January 30, 2025 Dates to Observe Objects on the Moon, Lunar Days in February, Mountain Ranges on the Moon No Comments Read more

Sinus Iridum – the Bay of Rainbows – Crater on the Moon

Sinus Iridum – the Bay of Rainbows – Crater on the Moon

The week of August 12-18 takes us from Day 8 to Day 15 This week we will highlight Sinus Iridum, located in the NW quadrant of the Field Map at E6 and viewable on Wednesday night. Sinus Iridum: [NW/E6; L=32°W]

Andrew Planck August 12, 2024August 9, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, Subsidence on the Moon, Wrinkle Ridge on the moon No Comments Read more

Albategnius: An 85-Mile Complex Moon Crater

Albategnius: An 85-Mile Complex Moon Crater

The week of May 13-19 takes us from Day 6 to Day 11. This week we will highlight the moon crater Albategnius, viewable on Wednesday evening, May 15, Day 8, and located in the SE quadrant of the Field Map

Andrew Planck May 13, 2024May 8, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May No Comments Read more

Most Spectacular Feature on the Moon – Apennine Mountain Range

Most Spectacular Feature on the Moon – Apennine Mountain Range

The week of February 12-18 takes us from Day 3 to Day 9. This week we will highlight Montes Apenninus, located in the NW quadrant of the field map and viewable on Friday evening. Montes Apenninus: The Apennine Mountain Range

Andrew Planck February 12, 2024February 9, 2024 Dates to Observe Objects on the Moon, Lunar Days in February, Mountain Ranges on the Moon No Comments Read more

The Bay of Rainbows on the Moon – Sinus Iridum

The Bay of Rainbows on the Moon – Sinus Iridum

The week of February 5-11 takes us from Day 25 to Day 2. This week we will highlight Sinus Iridum, viewable on Tuesday. Sinus Iridum: [NW/E6; L=32°W] Sinus Iridum (the Bay of Rainbows), located in the northwest sector of Mare

Andrew Planck February 5, 2024January 31, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February, Moon craters, Subsidence on the Moon, Wrinkle Ridge on the moon No Comments Read more

Three Imposing Moon Craters: Theophilus, Cyrillus, and Catharina

Three Imposing Moon Craters: Theophilus, Cyrillus, and Catharina

The week of January 15-21 takes us from Day 5 to Day 11. This week we will highlight the moon craters Theophilus, Cyrillus, and Catharina, viewable on Tuesday night. Day 6 (T=10° E.) Theophilus, Cyrillus, Catharina: [Repeated from Day 5–SE/L12;

Andrew Planck January 15, 2024January 10, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in January, Moon craters No Comments Read more

Eye-Catching Pair of Moon Craters – Aristoteles and Eudoxus

Eye-Catching Pair of Moon Craters – Aristoteles and Eudoxus

The week of December 25-31 takes us from Day 14 to Day 20. This week we will highlight the moon craters Aristoteles and Julius Caesar, viewable on Sunday night and found in the NE quadrant of the Field Map. Aristoteles:

Andrew Planck December 25, 2023December 17, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Moon craters No Comments Read more

Montes Apenninus on the Moon

Montes Apenninus on the Moon

The week of December 18-24 takes us from Day 7 to Day 13. This week we will highlight Montes Apenninus, viewable on Tuesday and Wednesday nights. Montes Apenninus: The Apennine Mountain Range [NW/G9] is the most spectacular feature on the

Andrew Planck December 18, 2023December 17, 2023 Dates to Observe Objects on the Moon, Lunar Days in December, Mountain Ranges on the Moon No Comments Read more

Theophilus, Cyrillus, Catharina – The Most Imposing Trio of Craters on the Moon

Theophilus, Cyrillus, Catharina – The Most Imposing Trio of Craters on the Moon

The week of December 11-17 takes us from Day 29 to Day 6. This week we will highlight the moon craters Theophilus, Cyrillus, and Catherina, viewable on Sunday evening. Theophilus, Cyrillus, Catharina: [SE/L12] This is the most imposing trio of

Andrew Planck December 11, 2023December 9, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more
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