Andrew Planck

Astronomer, Teacher, Musician

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Mare Nectaris

The Most Imposing Trio of Craters on the Moon: Theophilus, Cyrillus, and Catharina

The Most Imposing Trio of Craters on the Moon: Theophilus, Cyrillus, and Catharina

The week of April 18-24 takes us from Day 17 to Day 24. This week we will highlight the craters Theophilus, Cyrillus, and Catharina, viewable on Tuesday night. Theophilus, Cyrillus, Catharina: [SE/L12] This is the most imposing trio of craters

Andrew Planck April 18, 2022April 18, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April No Comments Read more

Rheita Valley – Longest Distinct Valley on the Moon

Rheita Valley – Longest Distinct Valley on the Moon

The week of December 6-12 takes us from Day 3 to Day 9. This week we will highlight Vallis Rheita, viewable on Tuesday & Wednesday evening, Days 4 and 5. Vallis Rheita: [SE/N14; L=52°E] At 276 miles, the Rheita Valley

Andrew Planck December 6, 2021December 5, 2021 Unusual Features on the Moon, Valleys on the Moon No Comments Read more

Moon Crater Fracastorius: One of the Best Examples of Subsidence

Moon Crater Fracastorius: One of the Best Examples of Subsidence

The week of August 9-15 takes us from Lunar Day 2 to Day 8. This week we will highlight the crater Fracastorius, viewable Thursday evening. Fracastorius: [SE/M13] Located on the south shore of Mare Nectaris, this is one of the

Andrew Planck August 9, 2021August 7, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in August, Uncategorized No Comments Read more

The Most Imposing Trio of Craters on the Moon

The Most Imposing Trio of Craters on the Moon

The week of March 11-17 takes us from Day 5 to Day 11. This week we will highlight the trio of craters Theophilus, Cyrillus, and Catharina, viewable right next to the terminator on Monday evening, and on Tuesday evening. Theophilus,

Andrew Planck March 11, 2019March 11, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Unusual Features on the Moon, Uranus No Comments Read more

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