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Andrew Planck

Astronomer, Teacher, Musician

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Month: August 2023

Multi-Ring Basin on the Moon – Mare Nectaris

Nectaris basin on the moon excavated 3.9 billion years ago

The week of August 28 – September 3 takes us from Day 13 to Day 20. This week we will highlight Mare Nectaris on the moon, which is viewable Sunday night in the SE quadrant of Lunar Map at L13.

Andrew Planck August 28, 2023August 25, 2023 Dates to Observe Objects on the Moon, Lunar Days in August, Multi-ring basin on the moon No Comments Read more

Rima Ariadaeus – Rille on the Moon that is a Graben

Rima Hyginus

The week of August 21-27 takes us from Day 5 to Day 11. This week we will highlight Rima Ariadaeus on the moon, viewable Tuesday night. Rima Ariadaeus: NE/J11; L=14°E] The best place to see rilles on the Moon is

Andrew Planck August 21, 2023September 11, 2023 Dates to Observe Objects on the Moon, Lunar Days in August, Rilles on the Moon No Comments Read more

Messier Moon Crater: Pair of Splash Rays that Resemble Tails of a Comet

Messier small pair of moon craters

The week of August 14-20 takes us from Day 28 to Day 4. This week we will highlight the moon crater Messier, viewable Sunday after midnight. Messier: [SE/K14; L=48°E] One of my favorite objects on the Moon is a small

Andrew Planck August 14, 2023July 30, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, Moon craters, Splash Rays on the Moon No Comments Read more

Catena Davy: Moon Crater Chain

Catena Davy: Moon Crater Chain

The week of August 7-13 takes us from Day 21 to Day 27. This week we will highlight Catena Davy on the moon which is viewable Tuesday morning before sunrise. Catena Davy: [SW/L9; L=7°W] This fascinating moon crater chain was

Andrew Planck August 7, 2023July 30, 2023 chain of moon craters, Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, 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
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