Andrew Planck

Astronomer, Teacher, Musician

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Jupiter

Montes Recti and the Collapse of the Arecibo Radio Telescope

Montes Recti and the Collapse of the Arecibo Radio Telescope

The week of December 7-13 takes us from Lunar Day 22 to Day 29. This week we will highlight Montes Recti, the Straight Range, viewable early Tuesday morning, and the collapse of the Arecibo radio telescope. The Straight Range is

Andrew Planck December 7, 2020December 6, 2020 Dates to Observe Objects on the Moon, Jupiter, Lunar Days in December, Radio Telescope, Saturn No Comments Read more

Mare Humorum: One of the Best Examples of Subsidence on the Moon

Mare Humorum: One of the Best Examples of Subsidence on the Moon

The week of January 6-12 takes us from Day 11 to Day 17. This week we will highlight Mare Humorum, viewable for the whole week beginning on Monday evening. Mare Humorum: [SW/M6] The Humorum basin is one of the best

Andrew Planck January 6, 2020January 6, 2020 Dates to Observe Objects on the Moon, Jupiter, Lunar Days in January No Comments Read more

Largest dome on the Moon: Valentine Dome

Largest dome on the Moon: Valentine Dome

The week of September 2-8 takes us from Day 4 to Day 10. This week we will highlight the Valentine Dome, viewable on Thursday evening. Valentine Dome: [NE/F11] Keep a close eye on the movement of the terminator, and when

Andrew Planck September 2, 2019September 2, 2019 Dates to Observe Objects on the Moon, Domes on the Moon, Jupiter, Lunar Days in September, Saturn, Volcanic Dome No Comments Read more

Arago Domes

Arago Domes

The week of August 5-11  takes us from Day 5 to Day 11. This week we will highlight the Arago domes viewable on Tuesday night. Arago domes: [NE/J12] Near the crater Arago there is a pair of very large domes,

Andrew Planck August 5, 2019August 5, 2019 Dates to Observe Objects on the Moon, Domes on the Moon, Jupiter, Lunar Days in August, Mercury, Saturn No Comments Read more

Moon Crater Messier: Pair of Splash Rays that Resemble the Tails of a Comet

Moon Crater Messier: Pair of Splash Rays that Resemble the Tails of a Comet

The week of Nov. 5-11 takes us from Day 28 (almost New Moon) to Day 4. This week we will highlight the crater Messier, viewable on Sunday during deep twilight (catch it before the Moon gets too low). Messier1: [SE/K14]

Andrew Planck November 5, 2018November 5, 2018 Craters on the Moon, Dates to Observe Objects on the Moon, Jupiter, Lunar Days in November, Saturn No Comments Read more

5 Spectacular Sites in Space: Rilles, Cobra Head Volcano, Longest Lunar Eclipse of the Century & 12 New Moons Orbiting Jupiter

5 Spectacular Sites in Space: Rilles, Cobra Head Volcano, Longest Lunar Eclipse of the Century & 12 New Moons Orbiting Jupiter

The week of July 23-29 takes us from Day 11 to Day 16. Full Moon is on Friday. This week we will highlight Rima Marius, visible on Tuesday night at 11:00 PM EDT, also Schröter’s Valley and the Cobra Head

Andrew Planck July 23, 2018July 22, 2018 Jupiter, Lunar Days in July, Rilles on the Moon No Comments Read more

Tycho #MoonCrater: One of the Moon’s Showpieces

Tycho #MoonCrater: One of the Moon’s Showpieces

The week of May 7-13 takes us from Day 22 to Day 28, two days before New Moon. This week we will highlight the crater Tycho, visible around 3:00 a.m. on Tuesday morning. Tycho1: [SW/P8; L=11°W] Tycho is one of

Andrew Planck May 7, 2018May 7, 2018 Craters on the Moon, Dates to Observe Objects on the Moon, Jupiter, Lunar Days in May, Mountain Ranges on the Moon, Unusual Features on the Moon No Comments Read more

Fracastorius: One of the Moon’s Best Examples of Subsidence

Fracastorius: One of the Moon’s Best Examples of Subsidence

The week of May 29-June 4 takes us from lunar Day 4 through Day 10. This week we will highlight the crater Fracastorius, visible on Tuesday evening. Fracastorius: [SE/M13; L=33°E] Located on the south shore of Mare Nectaris, this is

Andrew Planck May 29, 2017May 29, 2017 Craters on the Moon, Jupiter, Lunar Days in May, Rilles on the Moon No Comments Read more

Shapes of #MoonCraters Includes “Mickey Mouse Ears”

Shapes of #MoonCraters Includes “Mickey Mouse Ears”

The week of March 13 – 19 takes us from Lunar Day 16, right after full moon, through Day 21. This week we will highlight the moon craters Cleomedes and Burckhardt, viewable on Thursday evening, in addition to Jupiter and

Andrew Planck March 13, 2017March 13, 2017 Craters on the Moon, Dates to Observe Objects on the Moon, Jupiter, Lunar Days in March, Uncategorized No Comments Read more

Mare Frigoris: Northern Boundary Supports “Gargantuan Hypothesis”

Mare Frigoris: Northern Boundary Supports “Gargantuan Hypothesis”

The week of October 10th-16th takes us from Lunar Day 9 to the end of Day 15 (essentially still Full Moon). This week we will highlight Mare Frigoris, which is visible throughout the entire week, but starting on Saturday, you’ll

Andrew Planck October 10, 2016February 27, 2017 Dates to Observe Objects on the Moon, Jupiter, Lunar Days in October, Mare Patch on the Moon, Mercury No Comments Read more
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