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Astronomer, Teacher, Musician

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Month: May 2021

Ariadaeus and Rima Hyginus: Rilles on the Moon

Ariadaeus and Hyginus rilles on the moon

The week of May 31 – June 6 takes us from Lunar Day 21 to Day 27. This week we will highlight the Ariadaeus and Hyginus rills. Ariadaeus: [NE/J11; L=17°E] The Ariadaeus Rille (Rima Ariadaeus) is named after this 7-mi.

Andrew Planck May 31, 2021May 31, 2021 Lunar Days in May, Rilles on the Moon No Comments Read more

Furnerius A: Tiny Moon Crater That Can Splash its Debris Over Nearly Half of the Moon’s Surface

Furnerius A moon crater

The week of May 24-30 takes us from Lunar Day 13 to Day 20. This week we will highlight the crater Furnerius A, viewable late Thursday evening. Furnerius A: [SE/N15] On Day 3 we introduced you to Furnerius A and

Andrew Planck May 24, 2021May 23, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May No Comments Read more

Where Angels Fear to Tread: Moon Crater Maurolycus

moon crater Maurolycus

The week of May 17-23 takes us from Lunar Day 6 to Day 12. This week we will highlight the crater Maurolycus, viewable on Tuesday evening, Day 7. Maurolycus: [SE/P11] Let us venture briefly into a region where angels fear

Andrew Planck May 17, 2021May 16, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May No Comments Read more

Geminus and Burckhardt: Craters on the Moon

moon craters Geminus and Burckhardt

The week of May 10-16 takes us from Lunar Day 28 to Day 5. This week we will highlight the craters Geminus and Burckhardt, viewable on Friday evening. Geminus: [NE/F15] Roughly 200 miles north of Mare Crisium1, you will find

Andrew Planck May 10, 2021May 9, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May 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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