Andrew Planck

Astronomer, Teacher, Musician

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lunar dates

Clavius – Moon Crater Strewn with Craterlets

Clavius – Moon Crater Strewn with Craterlets

The week of June 16-22 takes us from Day 21 to Day 27. This week we will highlight the moon crater Clavius, visible on Tuesday night close to the terminator. Clavius: [SW/Q8] Sunset over Clavius is something that you don’t

Andrew Planck June 16, 2025June 14, 2025 Celestial Events, chain of moon craters, Craters on the Moon, Night Sky Observations, Saturn No Comments Read more

Furnerius – Southernmost Moon Crater That Makes Up the Great Eastern Chain

Furnerius – Southernmost Moon Crater That Makes Up the Great Eastern Chain

The week of June 9-15 takes us from Day 14 to Day 20. This week we will highlight the moon crater Furnerius, visible on Wednesday night and also Thursday night close to the terminator. Furnerius: [SE/N16; L=61°E] This is the

Andrew Planck June 9, 2025June 5, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in June, Moon craters No Comments Read more

Small Pair of Moon Craters – Messier and Messier A

Small Pair of Moon Craters – Messier and Messier A

The week of May 26 – June 1 takes us from Day 29 to Day 6. This week we will highlight the moon crater Messier, visible on Friday and Saturday nights. Messier: [SE/K14; L=48°E] One of my favorite objects on

Andrew Planck May 26, 2025May 23, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters No Comments Read more

Copernicus – The Monarch of the Moon

Copernicus – The Monarch of the Moon

The week of May 19-25 takes us from Day 22 to Day 28. This week we will highlight the moon crater Copernicus, the Monarch of the Moon, visible on Tuesday night. Copernicus: [NW/J7; L=20°W] Magnificent Copernicus has been justifiably dubbed

Andrew Planck May 19, 2025May 16, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters No Comments Read more

Moon Craters Aristillus and Autolycus

Moon Craters Aristillus and Autolycus

The week of May 12-18 takes us from Day 15 to Day 23. This week we will highlight the moon craters Aristillus & Autolycus, visible on Sunday night. Aristillus/Autolycus: [NE/F10; L=1°E] Aristillus is a well-defined complex crater, 34 miles in

Andrew Planck May 12, 2025May 9, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters No Comments Read more

Tycho – One of the Moon’s Showpieces

Tycho – One of the Moon’s Showpieces

The week of May 5-11 takes us from Day 8 to Day 14. This week we will highlight the moon crater Tycho, visible on Tuesday night. Tycho:1 [SW/P8; L=11°W] Tycho is one of the Moon’s showpieces, both on Day 8

Andrew Planck May 5, 2025April 30, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters No Comments Read more

Schiller – A Curiosity on the Moon

Schiller – A Curiosity on the Moon

The week of April 21-27 takes us from Lunar Day 24 to Day New Moon. This week we will highlight the moon crater Schiller, visible on Tuesday night. Schiller: [SW/Q6; L=39°W] Schiller is a curiosity. It has the appearance of

Andrew Planck April 21, 2025April 5, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April, Moon craters No Comments Read more

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

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

Moon Crater Taruntius

Moon Crater Taruntius

The week of March 31-April 6 takes us from Lunar Day 3 to Day 9. This week we will highlight the moon crater Taruntius, visible on Tuesday night close to the terminator. Taruntius: [NE/J14; L=47°E] Located on the north shore

Andrew Planck March 31, 2025March 27, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Floor Fractured Moon Craters, Lunar Days in April, Lunar Days in March, Simple Moon Craters 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)
  • Clavius – Moon Crater Strewn with Craterlets - June 16, 2025
  • Furnerius – Southernmost Moon Crater That Makes Up the Great Eastern Chain - June 9, 2025
  • Albategnius – 85 mile Complex Moon Crater - June 2, 2025
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