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Month: July 2021

The Two Largest Intact Moon Craters: Peirce and Picard

Mare Crisium on the moon showing Peirce and Picard

The week of July 26 – August 1 takes us from Lunar Day 18 to Day 23. This week we will highlight the moon craters Peirce and Picard, viewable early Tuesday morning. Peirce & Picard: [NE/H15] The two largest intact

Andrew Planck July 26, 2021July 31, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in July No Comments Read more

Moon Crater Schiller is a Curiosity

moon crater Schiller

The week of July 19-25 takes us from Lunar Day 10 to Day 17. This week we will highlight the crater Schiller, viewable Tuesday and Wednesday night in the SW quadrant. Schiller: [SW/Q6] Schiller is a curiosity. It has the

Andrew Planck July 19, 2021July 19, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in July, Unusual Features on the Moon No Comments Read more

Imbrium Basin and Caucasus Mountains on the Moon

Mare Imbrium basin on the moon

The week of July 12-18 takes us from Lunar Day 3 to Day 9. This week we will highlight the Imbrium Basin, half of which is viewable on Saturday evening, and the Caucasus Mountains, best viewed on Friday evening. Mare

Andrew Planck July 12, 2021July 11, 2021 Lunar Days in July, Mountain Ranges on the Moon No Comments Read more

Moon Crater Gassendi: Three Generations of Crater Age

Gassendi moon crater

The week of July 5-11 takes us from Lunar Day 25 to Day 2. This week we will highlight the crater Gassendi, viewable early Monday morning. Gassendi: [SW/L5; L=40°W] Three generations of crater age can be easily observed on Mare

Andrew Planck July 5, 2021July 5, 2021 Craters on the Moon, Lunar Days in July, Unusual Features 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
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