Andrew Planck

Astronomer, Teacher, Musician

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Full Moon

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

Characteristics of a Full #Moon

Characteristics of a Full #Moon

The week of September 24-30 takes us from Day 14 to Day 20. This week we will highlight the full moon. Full moon generally occurs around the end of Day 14, but this can vary by up to 12 hours,

Andrew Planck September 24, 2018September 24, 2018 Dates to Observe Objects on the Moon, Lunar Days in September, Splash Rays on the Moon 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

Two Phenomenon in Space: Chance of a Lifetime Solar Eclipse and Thinnest Crescent on Moon You Can See with the Naked Eye

Two Phenomenon in Space: Chance of a Lifetime Solar Eclipse and Thinnest Crescent on Moon You Can See with the Naked Eye

The week of August 21-27 takes us from New Moon to Day 6. This week we will discuss the thinnest crescent you can see with the naked eyes (try for it on Monday through Wednesday). Thin Crescent: Because the Moon

Andrew Planck August 21, 2017August 20, 2017 Lunar Days in August, Unusual Features on the Moon No Comments Read more

Full Moon to Lunar Day 20: Impressive Cape, Crater Chain and Comet Lovejoy

Full Moon to Lunar Day 20: Impressive Cape, Crater Chain and Comet Lovejoy

The week of April 10 – 16 takes us from lunar Day 14, full moon, to Day 20. This week we will highlight the crater Humboldt on Tuesday evening (you might try Monday to see if there’s enough contrast), and

Andrew Planck April 10, 2017April 9, 2017 Craters on the Moon, Lunar Days in April No Comments Read more

Eratosthenes: Greek Astronomer, Mathematician, and Chief Librarian of the Great Library in Alexandria

Eratosthenes: Greek Astronomer, Mathematician, and Chief Librarian of the Great Library in Alexandria

The week of March 6 – 12 takes us from Day 9 to Day 15, full moon. The mountains, valleys, and craters that stood out so vividly on Day 7 will rapidly lose their contrast from day 10 on and

Andrew Planck March 6, 2017 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March No Comments Read more

Unusual Feature of the Moon Crater Schickard

Unusual Feature of the Moon Crater Schickard

The week of January 9-15 takes us from Lunar Day 12 through Day 18, centering on the full moon. This week we will highlight the crater Schickard on Tuesday evening. Schickard Moon Crater: [SW/P4] When you look at Schickard, you

Andrew Planck January 9, 2017January 9, 2017 Craters on the Moon, Lunar Days in January No Comments Read more

Three Moon Craters named for the Apollo 11 Astronauts

Three Moon Craters named for the Apollo 11 Astronauts

The week of Jan. 2–8 takes us from Lunar Day 4 through Day 10, a period when you can see the Moon at its best! This week we will highlight the Apollo 11 landing site on Tuesday evening. Apollo 11:

Andrew Planck January 2, 2017January 1, 2017 Craters on the Moon, Lunar Days in January, Mars, Venus 1 Comment Read more

4 Eye-Catching Items to See On and Around the Moon

4 Eye-Catching Items to See On and Around the Moon

[Last week it was suggested that you observe Maurolycus on Monday. Although Maurolycus was just east of the terminator, its rim mountains are so high that its floor was still in shadow. Tuesday would have been a better day to

Andrew Planck December 12, 2016December 12, 2016 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in December No Comments Read more

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