Andrew Planck

Astronomer, Teacher, Musician

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Lunar Days in December

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

Geminid Meteor Shower and Moon Craters Wargentin, Nasmyth and Phocylides

Geminid Meteor Shower and Moon Craters Wargentin, Nasmyth and Phocylides

The week of December 9-15. takes us from Day 12 to Day 18. This week we will highlight the craters Wargentin, Nasmyth & Phocylides plus the Geminid meteor shower. Wargentin: [SW/P4] (Depending on libration, you may have to wait until

Andrew Planck December 8, 2019December 8, 2019 Craters on the Moon, Lunar Days in December, Unusual Features on the Moon No Comments Read more

The History and Beauty of Moon Craters Linné and Cassini

The History and Beauty of Moon Craters Linné and Cassini

The week of December 2 – 8 takes us from Day 6 to Day 11. This week we will highlight the craters Linné and Cassini, viewable on Tuesday evening. Linné: [NE/G11] Linné is a simple, relatively young crater with an

Andrew Planck December 2, 2019December 1, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more

Moon Crater Schiller and the Lunar Dome Gruithuisen Gamma

Moon Crater Schiller and the Lunar Dome Gruithuisen Gamma

The week of December 31 – January 6 takes us from the end of Day 24 to Day 1. This week we will highlight the crater Schiller and the lunar dome Gruithuisen Gamma, viewable around 4:00 AM on Tuesday morning.

Andrew Planck December 31, 2018December 31, 2018 Craters on the Moon, Dates to Observe Objects on the Moon, Domes on the Moon, Lunar Days in December, Unusual Features on the Moon No Comments Read more

Floor-Fractured Craters on the Moon and Secondary Craters

Floor-Fractured Craters on the Moon and Secondary Craters

The week of December 24-30 takes us from Day 17 to 23. This week we will highlight the crater Taruntius, viewable on Monday evening. Taruntius: [NE/J14] Located on the north shore of Fertility, Taruntius is a wonderful example of a

Andrew Planck December 24, 2018 Craters on the Moon, Lunar Days in December, Unusual Features on the Moon No Comments Read more

A Sky Viewer’s Delight: Rilles, Craters and Comets

A Sky Viewer’s Delight: Rilles, Craters and Comets

The week of December 17-23 takes us from the end of Day 9 through Day 16. This week we will highlight Mare Humorum, the Hippalus rilles, the craters Gassendi, Gassendi A (all viewable on Tuesday evening), and Comet 46/P Wirtanen.

Andrew Planck December 17, 2018December 17, 2018 "Seas" on the Moon, Comets, Lunar Days in December, Mountain Ranges on the Moon, Rilles on the Moon, Unusual Features on the Moon No Comments Read more

Two Significant Areas on the Moon and the Geminid Meteor Shower

Two Significant Areas on the Moon and the Geminid Meteor Shower

The week of December 10-16 takes us from Day 3 through Day 8. This week we will highlight the crater Fracastorius and Mare Nectaris, the Sea of Nectar, viewable on Wednesday night, and the Geminid meteor shower which will peak

Andrew Planck December 10, 2018December 10, 2018 Comets, Lunar Days in December, Multi-ring basin on the moon, star clusters, Unusual Features on the Moon No Comments Read more

The Brightest Comet this Year and an Admirable Moon Crater

The Brightest Comet this Year and an Admirable Moon Crater

The week of December 3-9 takes us from Day 26 to Day 2. Tuesday morning around 4:00 a.m. will be the only practical opportunity to view the Moon. This week we will highlight the crater Seleucus and Comet 46/P Wirtanen.

Andrew Planck December 3, 2018December 3, 2018 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more

#MoonCrater Albategnius – Can You Spot the Evidence?

#MoonCrater Albategnius – Can You Spot the Evidence?

Merry Christmas everyone! The week of December 25-31 takes us from Day 7 to Day 13, very nearly full moon. This week we will highlight the crater Albategnius, viewable on Monday night (just in case you don’t know what to

Andrew Planck December 25, 2017December 24, 2017 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more
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