Andrew Planck

Astronomer, Teacher, Musician

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One of the Moon’s Best Examples of Subsidence: Moon Crater Fracastorius

One of the Moon’s Best Examples of Subsidence: Moon Crater Fracastorius

The week of March 20-26 takes us from Day 29 to Day 6 This week we will highlight the moon crater Fracastorius, located in the SE quadrant of the Field Map and viewable on Sunday night. Fracastorius: [SE/M13; L=33°E] Located

Andrew Planck March 20, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Rilles on the Moon No Comments Read more

Mons Piton – Isolated Mountain on the Moon

Mons Piton – Isolated Mountain on the Moon

The week of March 13-19 takes us from Day 21 to Day 28. This week we will highlight Mons Piton on the moon, located in the NW quadrant of the Field Map and viewable early Tuesday morning. Mons Piton: [NE/E9;

Andrew Planck March 13, 2023March 11, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Mountain Ranges on the Moon No Comments Read more

Mare Imbrium: One Time Spectacular Multi-Ring Basin

Mare Imbrium: One Time Spectacular Multi-Ring Basin

The week of March 6-12 takes us from Full Moon to Day 20. This week we will highlight Mare Imbrium, located in the NW quadrant of the Field Map and viewable on Sunday night. Mare Imbrium: The Imbrium basin (all

Andrew Planck March 6, 2023March 2, 2023 Lunar Days in March, Mountain Ranges on the Moon, Multi-ring basin on the moon No Comments Read more

Bullialdus: The Most Conspicuous Moon Crater on Mare Nubium

Bullialdus: The Most Conspicuous Moon Crater on Mare Nubium

The week of February 27 – March 5 takes us from Lunar Day 8 to Day 14. This week we will highlight the moon crater Bullialdus, located in the SW quadrant of the Field Map and viewable on Wednesday night.

Andrew Planck February 27, 2023February 26, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February No Comments Read more

Rima Ariadaeus – Ariadaeus Rille

Rima Ariadaeus – Ariadaeus Rille

The week of February 20-26 takes us from Lunar Day 1 to Day 7. This week we will highlight Rima Ariadaeus, located in the NE quadrant of the Field Map and viewable on Sunday night. Ariadaeus: [NE/J11; L=17°E] The Ariadaeus

Andrew Planck February 20, 2023February 18, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February, Moon craters, Rilles on the Moon, Venus No Comments Read more

Longomontanus is Exception to the Rule Regarding Moon Craters

Longomontanus is Exception to the Rule Regarding Moon Craters

The week of February 13-19 takes us from Lunar Day 22 to Day 29. This week we will highlight the moon crater Longomontanus, located in the SW quadrant of the Field Map and viewable on Tuesday night. Longomontanus: [SW/P7; L=22°W]

Andrew Planck February 13, 2023February 12, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February, Moon craters 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

Mare Frigoris on the Moon and the Gargantuan Hypothesis

Mare Frigoris on the Moon and the Gargantuan Hypothesis

The week of January 30 to February 5 takes us from Lunar Day 10 to Day 15. This week we will highlight Mare Frigoris, located in the NE quadrant of the Field Map and viewable on Tuesday evening. Mare Frigoris:

Andrew Planck January 30, 2023January 25, 2023 Gargantuan hypothesis, Lunar Days in January No Comments Read more

Floor Fractured Moon Craters – Sabine and Ritter

Floor Fractured Moon Craters – Sabine and Ritter

The week of January 23 to January 29 takes us from Lunar Day 3 to Day 9. This week we will highlight the moon craters Sabine & Ritter, viewable on Friday evening and located in the NE quadrant of the

Andrew Planck January 23, 2023January 21, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in January No Comments Read more

Moon Crater Gassendi: One of Moon’s Most Beautiful and Interesting Objects

Moon Crater Gassendi: One of Moon’s Most Beautiful and Interesting Objects

The week of January 16 to January 22 takes us from Lunar Day 24 to Day 0.6. This week we will highlight the moon crater Gassendi. Gassendi: [SW/L5; L=40°W] Three generations of crater age can be easily observed on Mare

Andrew Planck January 16, 2023January 13, 2023 Craters on the Moon, Dates to Observe Objects on the Moon, Floor Fractured Moon Craters, Lunar Days in January, Rilles on the Moon No Comments Read more
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