Andrew Planck

Astronomer, Teacher, Musician

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Mare Nectaris

Multi-Ring Basin on the Moon – Mare Nectaris

Multi-Ring Basin on the Moon – Mare Nectaris

The week of August 28 – September 3 takes us from Day 13 to Day 20. This week we will highlight Mare Nectaris on the moon, which is viewable Sunday night in the SE quadrant of Lunar Map at L13.

Andrew Planck August 28, 2023August 25, 2023 Dates to Observe Objects on the Moon, Lunar Days in August, Multi-ring basin on the moon No Comments Read more

Vallis Rheita: Series of Interlocking Moon Craters

Vallis Rheita: Series of Interlocking Moon Craters

The week of February 6-12 takes us from Lunar Day 16 to Day 21. This week we will highlight Vallis Rheita, located in the SE quadrant of the Field Map and viewable on Tuesday night. Vallis Rheita: [SE/N14; L=52°E] At

Andrew Planck February 6, 2023February 6, 2023 chain of moon craters, Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February No Comments Read more

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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