Andrew Planck

Astronomer, Teacher, Musician

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Lunar Days in March

Rheita Valley: The Longest Distinct Valley on the Moon

Rheita Valley: The Longest Distinct Valley on the Moon

The week of March 23-29 takes us from Lunar Day 29 to Day 5. This week we will highlight the Rheita Valley, viewable in the evening on Saturday, March 28. Vallis Rheita: [SE/N14] At 276 miles, the Rheita Valley is

Andrew Planck March 23, 2020March 24, 2020 Dates to Observe Objects on the Moon, Lunar Days in March, Saturn, Valleys on the Moon No Comments Read more

Rimae Hippalus and Spring Equinox

Rimae Hippalus and Spring Equinox

The week of March 16-22 takes us from Lunar Day 23 to Day 28. This week we will highlight the Hippalus rilles, viewable around 5:00 a.m. on Wednesday morning. Rimae Hippalus: [SW/M6] On the east shore of Mare Humorum you

Andrew Planck March 16, 2020March 17, 2020 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Rilles 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

Straight Wall: Showpiece Lunar Fault Line

Straight Wall: Showpiece Lunar Fault Line

The week of March 2-8 takes us from Lunar Day 7 to Day 14, This week we will highlight the lunar fault Straight Wall, visible on Days 7 & 8. Straight Wall: (Rupes Recta): [SW/M9] Two of the best-known faults

Andrew Planck March 2, 2020March 4, 2020 Constellations, Dates to Observe Objects on the Moon, Faults on the Moon, Lunar Days in March No Comments Read more

Complex Moon Craters – Aristoteles and Eudoxus

Complex Moon Craters – Aristoteles and Eudoxus

The week of March 25-31 takes us from Day 20 to Day 25. This week we will highlight the craters Aristoteles and Eudoxus, viewable early Tuesday morning. Aristoteles1: [NE/D11] Close to the terminator this morning there is an eye-catching pair

Andrew Planck March 25, 2019March 25, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March No Comments Read more

Vernal Equinox – Can You Stand an Egg on its End?

Vernal Equinox – Can You Stand an Egg on its End?

The week of March 18-24 takes us from Day 12 to Day 19. This week we will highlight Mare Frigoris and the crater Shickard, viewable on Monday evening. Mare Frigoris: [NW-NE/D6-13] This is the only mare patch that isn’t even

Andrew Planck March 18, 2019March 18, 2019 Dates to Observe Objects on the Moon, Equinox, Lunar Days in March, Unusual Features on the Moon No Comments Read more

The Most Imposing Trio of Craters on the Moon

The Most Imposing Trio of Craters on the Moon

The week of March 11-17 takes us from Day 5 to Day 11. This week we will highlight the trio of craters Theophilus, Cyrillus, and Catharina, viewable right next to the terminator on Monday evening, and on Tuesday evening. Theophilus,

Andrew Planck March 11, 2019March 11, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Unusual Features on the Moon, Uranus No Comments Read more

Moon Craters that Look Like Plato and Mickey Mouse Ears

Moon Craters that Look Like Plato and Mickey Mouse Ears

The week of March 4-10 takes us from Day 28 to Day 4. This week we will highlight the craters Endymion and Burckhardt, viewable on Saturday evening. Endymion: [NE/D15; L=57°E] This is an older crater which somewhat resembles Plato [Day

Andrew Planck March 4, 2019March 4, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Unusual Features on the Moon No Comments Read more

Features on the Moon: The Bay of Rainbows and the Golden Handle

Features on the Moon: The Bay of Rainbows and the Golden Handle

The week of March 26 – April 1 takes us from Day 10 to Day 16, right after full moon. This week we will highlight Sinus Iridum, visible on Monday and Tuesday nights. Sinus Iridum: [NW/E6] Around the end of

Andrew Planck March 26, 2018March 26, 2018 Dates to Observe Objects on the Moon, Lunar Days in March, Mountain Ranges on the Moon, Unusual Features on the Moon No Comments Read more

Valentine Dome and Vernal Equinox

Valentine Dome and Vernal Equinox

The week of March 19-25 takes us from Day 2 to Day 9. This week we will highlight the so-called Valentine Dome, viewable on Friday night, and the vernal equinox. Valentine Dome: [NE/F11; L=10°E] Keep a close eye on the

Andrew Planck March 19, 2018March 18, 2018 Dates to Observe Objects on the Moon, Domes on the Moon, Lunar Days in March, Unusual Features on the Moon No Comments Read more
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