Andrew Planck

Astronomer, Teacher, Musician

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lunar days

Rupes Recta and Rupes Cauchy: Two of the Best-Known Faults on the Moon

Rupes Recta and Rupes Cauchy: Two of the Best-Known Faults on the Moon

The week of December 26 – January 1 takes us from Lunar Day 4 to Day 10. This week we will highlight the fault Rupes Cauchy located on the moon in the NE quadrant of the Field Map and viewable

Andrew Planck December 26, 2022December 20, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in December, Rilles on the Moon No Comments Read more

Moon Crater Gutenberg – Unusual Sequence of Moon Crater Development

Moon Crater Gutenberg – Unusual Sequence of Moon Crater Development

The week of December 5 – 11 takes us from Lunar Day 13 to Day 19. This week we will highlight the moon crater Gutenberg, located in the SE quadrant of the Field Map. Gutenberg: [SE/K14; L=41°E] Gutenberg crater is

Andrew Planck December 5, 2022December 6, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Uncategorized, Unusual Features on the Moon No Comments Read more

Moon Craters Aristoteles and Julius Caesar

Moon Craters Aristoteles and Julius Caesar

The week of November 28 – December 4 takes us from Lunar Day 6 to Day 12. This week we will highlight the moon craters Aristoteles & Julius Caesar, found in the NE quadrant of the Field Map. Aristoteles: [NE/D11;

Andrew Planck November 28, 2022November 27, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Lunar Days in November No Comments Read more

Floor-Fractured Moon Crater Taruntius – Unusually Shallow Basin

Floor-Fractured Moon Crater Taruntius – Unusually Shallow Basin

This week we will highlight the moon crater Taruntius, located on the north shore of the Sea of Fertiliuty. Taruntius: [NE/J14; L=47°E] Taruntius is a wonderful example of a floor-fractured crater (FFC). Take a close look at it. Once you

Andrew Planck November 21, 2022November 20, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in November No Comments Read more

Moon Crater Hippalus – Finest Examples of Arcuate Rilles

Moon Crater Hippalus – Finest Examples of Arcuate Rilles

This week we will highlight the Hippalus rilles on the moon, viewable early Wednesday morning, and the Leonid meteor shower. Rimae Hippalus: [SW/M6] On the east shore of Mare Humorum, you will find the remnant of the moon crater Hippalus,

Andrew Planck November 14, 2022November 9, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in November, Rilles on the Moon No Comments Read more

Wrinkle Ridge Dorsum Oppel on the Moon and the Lunar Eclipse

Wrinkle Ridge Dorsum Oppel on the Moon and the Lunar Eclipse

The week of November 7-13 takes us from Lunar Day 15 to Day 20. This week we will highlight the wrinkle ridge Dorsum Oppel on the moon and the lunar eclipse. Dorsum Oppel: [NE/H15; L=53°E] As the lava cooled following

Andrew Planck November 7, 2022November 9, 2022 Lunar Days in November, Lunar Eclipse, Lunar Observers, Unusual Features on the Moon, Wrinkle Ridge on the moon No Comments Read more

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

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 Bullialdus and Ghost Moon Crater Lambert-R

Moon Crater Bullialdus and Ghost Moon Crater Lambert-R

The week of October 3-9 takes us from Lunar Day 7 to Full Moon. This week we will highlight the moon crater Bullialdus and the ghost crater Lambert-R, immediately above the crater Lambert, both viewable on Tuesday evening. Bullialdus: [SW/M7]

Andrew Planck October 3, 2022September 25, 2022 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in September No Comments Read more
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