Andrew Planck

Astronomer, Teacher, Musician

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Lunar Days in October

Apennine Mountain Range and Rupes Recta, the Straight Wall, on the Moon

Apennine Mountain Range and Rupes Recta, the Straight Wall, on the Moon

The week of October 31 – November 6 takes us from Lunar Day 7 to Day 13. This week we will highlight the Apennine Mountain range, located on the Field Map at [NW/G9] and viewable Tuesday evening, and Rupes Recta,

Andrew Planck October 31, 2022October 28, 2022 Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in November, Lunar Days in October No Comments Read more

Arago: Unusual Moon Crater and Pair of Large Domes

Arago: Unusual Moon Crater and Pair of Large Domes

The week of October 24 – 30 takes us from Lunar Day 29 to Day 6. This week we will highlight: Arago: [NE/J12; L=21°E] About 50 miles from the western shore of Tranquillity you will find the crater Arago (16

Andrew Planck October 24, 2022October 22, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Domes on the Moon, Lunar Days in October, Unusual Features on the Moon No Comments Read more

Lunar Swirl Reiner Gamma – Flat Features That Cast No Shadows

Lunar Swirl Reiner Gamma – Flat Features That Cast No Shadows

The week of October 17-23 takes us from Lunar Day 23 to Day 28. This week we will highlight Reiner Gamma and the Struve/Russel crater, visible through Saturday. The week of September 28 – October 4 takes us from Lunar

Andrew Planck October 17, 2022October 22, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in October, Lunar Swirls No Comments Read more

Mare Crisium Result from Impact of Large Meteor 3.9 Billion Years Ago

Mare Crisium Result from Impact of Large Meteor 3.9 Billion Years Ago

The week of October 10-16 takes us from Lunar Day 16 to Day 22. This week we will highlight Mare Crisium, viewable Tuesday evening. Mare Crisium: [NE/H15] On Day 17 you should be able to observe Crisium’s complexities more successfully

Andrew Planck October 10, 2022October 10, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in October No Comments Read more

Moon Crater Archimedes and Story Behind “Eureka, I have found it!”

Moon Crater Archimedes and Story Behind “Eureka, I have found it!”

The week of October 25-31 takes us from Day 20 to 25. This week we will highlight the moon crater Archimedes, viewable after midnight on Wednesday, Day 22. Archimedes1: [NW/G9; L=4°W] This is a prominent 50-mile crater with terraces and

Andrew Planck October 25, 2021October 25, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in October, Lunar Observers No Comments Read more

Floor-Fractured Moon Crater Taruntius

Floor-Fractured Moon Crater Taruntius

The week of October 18-24 takes us from Day 13 to 19. This week we will highlight the floor-fractured moon crater Taruntius, visible late Saturday night, Day 18. Taruntius: [NE/J14] Located on the north shore of Fertility, Taruntius is a

Andrew Planck October 18, 2021October 17, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Floor Fractured Moon Craters, Lunar Days in October, Uncategorized No Comments Read more

Complex and Simple Moon Craters: Eudoxus and Linné

Complex and Simple Moon Craters: Eudoxus and Linné

The week of October 11-17 takes us from Day 6 to Day 12. This week we will highlight the moon craters Eudoxus and Linné, viewable on Monday evening. Eudoxus1: [NE/E11; L=16°E] Both Eudoxus and Aristoteles to its north are wonderfully

Andrew Planck October 11, 2021October 10, 2021 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in October, Simple Moon Craters No Comments Read more

Wrinkle Ridge Dorsum Oppel – The Flying Eagle

Wrinkle Ridge Dorsum Oppel – The Flying Eagle

The week of October 4-10 takes us from Day 28 to Day 5. This week we will highlight the wrinkle ridge Dorsum Oppel, a feature informally known as “the Flying Eagle,” viewable on Wednesday night and early Thursday morning. The

Andrew Planck October 4, 2021October 5, 2021 Dates to Observe Objects on the Moon, Lunar Days in October, Ridges on the Moon No Comments Read more

Philolaus: Lunar Impact Crater

Philolaus: Lunar Impact Crater

The week of October 26 – November 1st takes us from Lunar Day 10 to Day 16. This week we will highlight the crater Philolaus, viewable on Tuesday evening (Day 11). Philolaus is a lunar impact crater that is located

Andrew Planck October 26, 2020October 26, 2020 Craters on the Moon, Lunar Days in October, Uncategorized No Comments Read more

The Two Largest Intact Moon Craters on Mare Crisium: Peirce and Picard

The Two Largest Intact Moon Craters on Mare Crisium: Peirce and Picard

The week of October 19-25 takes us from Lunar Day 4 to Day 10. This week we will highlight the craters Peirce and Picard, viewable starting Monday evening. Peirce & Picard: [NE/H15] The two largest intact craters on Mare Crisium

Andrew Planck October 19, 2020October 18, 2020 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in October, Meteor Shower No Comments Read more
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