Andrew Planck

Astronomer, Teacher, Musician

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vernal equinox

Vernal Equinox: Can an Egg Stand on Its End?

Vernal Equinox: Can an Egg Stand on Its End?

The week of March 14-20 takes us from Day 12 to Day 18. This week we will highlight the moon craters Endymion and Geminus which will be viewable on Saturday night around 11:00 P.M. Endymion: [NE/D15; L=57°E] This is an

Andrew Planck March 14, 2022March 14, 2022 Craters on the Moon, Dates to Observe Objects 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

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

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

Moon Crater Timocharis Has Number of Complexities

Moon Crater Timocharis Has Number of Complexities

The week of March 20-26 takes us from Lunar Day 22 to Day 28, so the Moon is viewable only in the early morning hours. This week we will highlight the crater Timocharis in Mare Imbrium. Timocharis: [NW/G8] About three

Andrew Planck March 20, 2017March 20, 2017 Craters on the Moon, Equinox, Lunar Days in March No Comments Read more

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