Andrew Planck

Astronomer, Teacher, Musician

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Constellations

Straight Wall: Showpiece Lunar Fault Line

Straight Wall: Showpiece Lunar Fault Line

The week of March 2-8 takes us from Lunar Day 7 to Day 14, This week we will highlight the lunar fault Straight Wall, visible on Days 7 & 8. Straight Wall: (Rupes Recta): [SW/M9] Two of the best-known faults

Andrew Planck March 2, 2020March 4, 2020 Constellations, Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in March No Comments Read more

Last Total Eclipse During a “Super Blue Blood Moon” – 150 years Ago

Last Total Eclipse During a “Super Blue Blood Moon” – 150 years Ago

The week of January 29 – February 4 takes us from Day 13 through Day 19. This week we will highlight the total lunar eclipse of January 31st. On Wednesday morning there will be a quadruple whammy: a total lunar

Andrew Planck January 29, 2018January 29, 2018 Constellations, Lunar Days in January, Lunar Days in July No Comments Read more

Janssen Lunar Moon Crater: Example of How New Craters are Superimposed on Top of Older Craters

Janssen Lunar Moon Crater: Example of How New Craters are Superimposed on Top of Older Craters

The week of July 18th – July 24th takes us from the end of lunar Day 14 to the beginning of Day 20. Monday and Tuesday are virtually full moons, and there is very little contrast to set off the

Andrew Planck July 18, 2016July 18, 2016 Constellations, Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in July 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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