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Astronomer, Teacher, Musician

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Month: April 2020

Moon Crater Manilius and the Sulpicius Gallus Rilles

moon crater Manilius and Sulpicius Gallus Rilles

The week of April 27 – May 3 takes us from Lunar Day 5 to Day 11. This week we will highlight the crater Manilius and the Sulpicius Gallus Rilles, viewable on Wednesday evening, Day 7. Sulpicius Gallus Rilles: [NE/G10-11]

Andrew Planck April 27, 2020April 27, 2020 Dates to Observe Objects on the Moon, Lunar Days in April, Rilles on the Moon No Comments Read more

Moon Craters Aristarchus and Endymion

Aristarchus crater on the moon

The week of April 20-26 takes us from Lunar Day 27 to Day 3. This week we will highlight the craters Endymion and Aristarchus, viewable on Sunday evening. One of the loveliest views of the Moon can be seen around

Andrew Planck April 20, 2020April 21, 2020 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April, Unusual Features on the Moon No Comments Read more

The Most Spectacular Feature on the Moon: Apennine Mountain Range

Apennine Mountain Range on the moon

The week of April 13-19 takes us from Lunar Day 20 to 26. This week we will highlight the Apennine Mountain Range, viewable around 5:00 A.M. on Wednesday morning. Montes Apenninus: The Apennine Mountain Range [NW/G9] is the most spectacular

Andrew Planck April 12, 2020 Apps for Observing the Moon and Objects, Dates to Observe Objects on the Moon, Lunar Days in April, Mountain Ranges on the Moon No Comments Read more

Serpentine Ridge: Moon’s Best Example of a Wrinkle Ridge

Serpentine Ridge reveals the ghostly outlines of an underlying mountain range that formed the inner ring of the Serenity basin.

The week of April 6-12 takes us from Lunar Day 13 to Day 20. This week we will highlight the Serpentine Ridge viewable on Saturday evening. Serpentine Ridge1: [NE/G12] West of the crater Posidonius in the Sea of Serenity you

Andrew Planck April 6, 2020April 6, 2020 Lunar Days in April, Lunar Observers, Ridges on the Moon, 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
Latest posts by Andrew Planck (see all)
  • One of the Moon’s Loveliest Sights – Moon Crater Plato - March 9, 2026
  • Moon Crater Endymion Resembles Plato - March 2, 2026
  • Maurolycus – Moon Crater in the Lunar Highlands - February 23, 2026
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