Andrew Planck

Astronomer, Teacher, Musician

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Unusual Features on the Moon

Ghost Crater on the Moon – Lamont

Ghost Crater on the Moon – Lamont

The week of May 25-31 takes us from Lunar Day 3 to Day 9. This week we will highlight the ghost crater Lamont. Lamont: [NE/J12] About 100 miles (1.5 arc-minutes) off the western shore of Tranquility is a remarkable series

Andrew Planck May 25, 2020May 25, 2020 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in May, Unusual Features on the Moon No Comments Read more

Moon Craters Rima Hyginus and Mare Vaporum

Moon Craters Rima Hyginus and Mare Vaporum

The week of May 11-17 takes us from Lunar Day 20 to Day 25. This week we will highlight Rima Hyginus, viewable Wednesday morning, and Mare Vaporum, viewable Wednesday & Thursday mornings. Mare Vaporum: [NE/H10; L=4°E] Notice how there are

Andrew Planck May 11, 2020May 12, 2020 Craters on the Moon, Lunar Days in May, Rilles on the Moon, Unusual Features on the Moon No Comments Read more

Rima Sirsalis: The Most Conspicuous Rille on the Moon

Rima Sirsalis: The Most Conspicuous Rille on the Moon

The week of May 4-10 takes us from Lunar Day 12 to Day 19. This week we will highlight the Sirsalis Rilles and the crater Galilaie, viewable on Tuesday evening. Rimae Sirsalis: [SW/L3-4] Just in from the southwest shore of

Andrew Planck May 4, 2020May 4, 2020 Lunar Days in May, Rilles on the Moon, Unusual Features on the Moon No Comments Read more

Moon Craters Aristarchus and Endymion

Moon Craters Aristarchus and Endymion

The week of April 20-26 takes us from Lunar Day 27 to Day 3. This week we will highlight the craters Endymion and Aristarchus, viewable on Sunday evening. One of the loveliest views of the Moon can be seen around

Andrew Planck April 20, 2020April 21, 2020 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in April, Unusual Features on the Moon No Comments Read more

Serpentine Ridge: Moon’s Best Example of a Wrinkle Ridge

Serpentine Ridge: Moon’s Best Example of a Wrinkle Ridge

The week of April 6-12 takes us from Lunar Day 13 to Day 20. This week we will highlight the Serpentine Ridge viewable on Saturday evening. Serpentine Ridge1: [NE/G12] West of the crater Posidonius in the Sea of Serenity you

Andrew Planck April 6, 2020April 6, 2020 Lunar Days in April, Lunar Observers, Ridges on the Moon, Unusual Features on the Moon No Comments Read more

The Flying Eagle on the Moon

The Flying Eagle on the Moon

The week of March 9-15 takes us from Lunar Day 15, full moon, to day 22. This week we will highlight a feature informally known as “the Flying Eagle,” viewable on Wednesday night and early Thursday morning. The Flying Eagle:

Andrew Planck March 9, 2020March 11, 2020 Lunar Days in March, Ridges on the Moon, Unusual Features on the Moon No Comments Read more

Brilliantly Lit “X” in the Sky: Lunar X

Brilliantly Lit “X” in the Sky: Lunar X

The week of February 24 – March 1 takes us from Lunar Day 1 to Day 7. This week we will highlight a feature popularly referred to as the Lunar X. Lunar X: [SE/M10] On Sunday evening, the Sun will

Andrew Planck February 24, 2020February 24, 2020 Craters on the Moon, Lunar Days in February, Lunar Observers, Unusual Features on the Moon No Comments Read more

Rima Hyginus on the Moon and Is Betelgeuse Going Supernova?

Rima Hyginus on the Moon and Is Betelgeuse Going Supernova?

The week of December 30 – January 5 takes us from Day 4 to Day 10. This week we will highlight Rima Hyginus (the Hyginus Rille), viewable on Thursday evening, and the Quadrantid meteor shower. Rima Hyginus: [NE/J10;] At the

Andrew Planck December 30, 2019December 30, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in January, Rilles on the Moon, Unusual Features on the Moon No Comments Read more

Not Just on Star Trek: Moon Craters Peirce & Picard and the Wrinkle Ridge Dorsum Oppel

Not Just on Star Trek: Moon Craters Peirce & Picard and the Wrinkle Ridge Dorsum Oppel

The week of December 23-29 takes us from Day 27 to Day 3. This week we will highlight the craters Peirce & Picard and the wrinkle ridge Dorsum Oppel, viewable on Sunday evening. Peirce & Picard: [NE/H15] The two largest

Andrew Planck December 23, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Ridges on the Moon, Unusual Features on the Moon No Comments Read more

Finger-Like Projections on the Moon: Mare Vaporum

Finger-Like Projections on the Moon: Mare Vaporum

The week of December 16-22 takes us from Day 19 to Day 26. This week we will highlight Mare Vaporum, viewable early Wednesday morning, and the Winter Solstice. Mare Vaporum: [NE/H10; L=4°E] Notice how there are finger-like projections extending from

Andrew Planck December 16, 2019December 15, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December, Unusual Features on the Moon No Comments Read more
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