Andrew Planck

Astronomer, Teacher, Musician

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Mare Vaporum

Rima Hyginus (Hyginus Rille) on the Moon

Rima Hyginus (Hyginus Rille) on the Moon

The week of November 27 – December 3 takes us from Day 16 to Day 21. This week we will highlight Rima Hyginus (the Hyginus rille) on the moon, viewable on Saturday night around 11:00 and located in the NE

Andrew Planck November 27, 2023November 6, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in November, Mars, Rilles on the Moon No Comments Read more

Rima Hyginus: A Line of Linked Moon Craters

Rima Hyginus: A Line of Linked Moon Craters

The week of September 4 – September 10 takes us from Day 20 to Day 26. This week we will highlight Rima Hyginus, viewable on Tuesday before midnight. Rima Hyginus: [NE/J10; L=8°E] At the west end of the Ariadaeus rille,

Andrew Planck September 4, 2023August 31, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September, Rilles on the Moon No Comments Read more

Moon Crater Rima Hyginus: Located at a Pivot Point

Moon Crater Rima Hyginus: Located at a Pivot Point

The week of February 7-13 takes us from Day 7 to Day 12. This week we will highlight Rima Hyginus and Rima Ariadaeus, located in the NE quadrant at J10 & J11 on your field map. Rima Hyginus: [NE/J10; L=8°E]

Andrew Planck February 7, 2022February 7, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February, Rilles 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)
  • Moon Crater Janssen Located 85 miles Southwest of the Rheita Valley - July 7, 2025
  • Albategnius – How to Observe This Stunning Moon Crater Near the Terminator - June 30, 2025
  • Vallis Rheita: The Moon’s Longest Valley and a Stunning Lunar Observation Target This Week - June 23, 2025
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