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Lunar Days in May

Moon Crater Wargentin: Unique Wrinkle Ridge Pattern

moon crater Wargentin

The week of May 15-21 takes us from Day 26 to Day 2. This week we will highlight the moon crater Wargentin, viewable early Sunday morning. Wargentin: [L=60°W] This is one of the more unusual craters on the Moon. When

Andrew Planck May 15, 2023May 10, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Moon craters, Wrinkle Ridge on the moon No Comments Read more

Two of the Best-Known Faults on the Moon

Rupes Cauchy crater on the moon

The week of May 8-14 takes us from Day 18 to Day 24. This week we will highlight Rupes Cauchy, a fault on the moon, viewable on Tuesday before sunrise. Rupes Cauchy: [NE/J13; L=37°E] Two of the best-known faults on

Andrew Planck May 8, 2023April 22, 2023 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in May, Rilles on the Moon, Saturn No Comments Read more

Moon Crater Schickard – Floor has Stripes

crater Schickard on the moon has stripes

The week of May 1-7 takes us from Day 11 to Day 17. This week we will highlight the moon crater Schickard, viewable on Tuesday night and located in the SW quadrant of the Field Map. Schickard: [SW/P4; L=55°W] When

Andrew Planck May 1, 2023May 1, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Meteor Shower, Moon craters, Unusual Features on the Moon No Comments Read more

Moon Crater Mare Nectaris: Example of Multi-Ring Basin

On the moon Mare Nectaris

The week of May 30-June 5 takes us from New Moon to Day 6. This week we will highlight the moon crater Mare Nectaris, viewable on Saturday evening, Day 5. Mare Nectaris: [SE/L13] The Nectaris basin was excavated 3.9 billion

Andrew Planck May 30, 2022May 28, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in June, Lunar Days in May, Multi-ring basin on the moon No Comments Read more

Moon Crater Longomontanus: Exception to the Rule About Moon Crater Age

moon crater Longomontanus

The week of May 23-29 takes us from Day 24 to Day 29. This week we will highlight the moon crater Longomontanus, viewable on Tuesday morning just before sunrise. [SW/P7; L=22°W] Take a look at Longomontanus and before reading further,

Andrew Planck May 23, 2022May 21, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Unusual Features on the Moon No Comments Read more

Brightest Spot on the Moon: Moon Crater Aristarchus

moon crater Aristarchus

The week of May 16-22 takes us from Day 16 to Day 23. This week we will highlight the moon crater Aristarchus. Aristarchus: [NW/G5; L=47°W] The moon crater Aristarchus is the brightest spot on the Moon. It is so bright

Andrew Planck May 16, 2022May 15, 2022 Dates to Observe Objects on the Moon, Lunar Days in May, Unusual Features on the Moon No Comments Read more

Blood Moon – Lunar Eclipse

Total lunar eclipse or blood moon

The week of May 9-15 takes us from Day 8 to Day 15. This week we will highlight a lunar eclipse to take place on Sunday, May 15. A total lunar eclipse will occur on Sunday, May 15. It is

Andrew Planck May 9, 2022May 8, 2022 Dates to Observe Objects on the Moon, Lunar Days in May, Lunar Eclipse No Comments Read more

Southern Highlands and Moon Crater Stöfler

Southern Highlands on the moon

The week of May 2-8 takes us from Day 2 to Day 7. This week we will highlight the Southern Highlands and the crater Stōfler, viewable Sunday evening. Southern Highlands: [SE ±K-R11] There is a veritable blizzard of craters in

Andrew Planck May 2, 2022April 30, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May No Comments Read more

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
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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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