Andrew Planck

Astronomer, Teacher, Musician

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Saturn

Mare Vaporum on the Moon and September Dates of Note for Space

Mare Vaporum on the Moon and September Dates of Note for Space

The week of August 29 – September 4 takes us from Lunar Day 3 to Day 9. This week we will highlight Mare Vaporum, viewable on Saturday evening. Mare Vaporum: [NE/H10; L=4°E] Notice how there are finger-like projections extending from

Andrew Planck August 29, 2022August 27, 2022 Dates to Observe Objects on the Moon, Lunar Days in August, Mare Patch on the Moon No Comments Read more

Moon Craters Proclus and Aristillus

Moon Craters Proclus and Aristillus

The week of December 28 – January 3 takes us from Lunar Day 14 to 20. This week we will highlight the craters Proclus and Aristillus. Aristillus: [NE/F10] We were first introduced to Aristillus on Day 7 when its more

Andrew Planck December 28, 2020December 27, 2020 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more

Montes Recti and the Collapse of the Arecibo Radio Telescope

Montes Recti and the Collapse of the Arecibo Radio Telescope

The week of December 7-13 takes us from Lunar Day 22 to Day 29. This week we will highlight Montes Recti, the Straight Range, viewable early Tuesday morning, and the collapse of the Arecibo radio telescope. The Straight Range is

Andrew Planck December 7, 2020December 6, 2020 Dates to Observe Objects on the Moon, Jupiter, Lunar Days in December, Radio Telescope, Saturn No Comments Read more

Multi-Ring Imprint Result of Moon Crater Mare Crisium

Multi-Ring Imprint Result of Moon Crater Mare Crisium

The week of October 28 – November 3 takes us from Day 1 to Day 7. This week we will highlight Mare Crisium, viewable on Thursday evening. Mare Crisium: [NE/H15] On Day 4 the Sea of Crises, the first of

Andrew Planck October 28, 2019October 26, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in October 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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