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Andrew Planck

Astronomer, Teacher, Musician

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Month: February 2024

Rupes Cauchy and Rupes Recta: 2 Best-Known Faults on the Moon

The week of February 26 – March 3 takes us from Day 17 to 23. This week we will highlight Rupes Cauchy, viewable on Tuesday night and located in the NE quadrant of the Field Map at J13. Rupes Cauchy:

Andrew Planck February 26, 2024February 23, 2024 Uncategorized No Comments Read more

Langrenus & Vendelinus Moon Craters: First Two Segments of Great Eastern Chain

Langrenus moon crater

The week of February 19-25 takes us from Day 11 to 16. This week we will highlight the moon crater Langrenus, viewable on Sunday night. Langrenus & Vendelinus: [SE/K-L16; L=61°E] These craters are the first two segments of the Great

Andrew Planck February 19, 2024February 16, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February No Comments Read more

Most Spectacular Feature on the Moon – Apennine Mountain Range

Apennine Mountain Range on the moon most spectacular feature

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

Sinus Iridum on the moon - the Bay of Rainbows

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

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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)
  • One of the Moon’s Loveliest Sights – Moon Crater Plato - March 9, 2026
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  • Maurolycus – Moon Crater in the Lunar Highlands - February 23, 2026
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