Andrew Planck

Astronomer, Teacher, Musician

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Lunar Days in March

Moon Crater Taruntius

Moon Crater Taruntius

The week of March 31-April 6 takes us from Lunar Day 3 to Day 9. This week we will highlight the moon crater Taruntius, visible on Tuesday night close to the terminator. Taruntius: [NE/J14; L=47°E] Located on the north shore

Andrew Planck March 31, 2025March 27, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Floor Fractured Moon Craters, Lunar Days in April, Lunar Days in March, Simple Moon Craters No Comments Read more

Rima Sirsalis – Small Overlapping Moon Crater

Rima Sirsalis – Small Overlapping Moon Crater

The week of March 24-30 takes us from Lunar Day 25 to Day 2. This week we will highlight the Rima Sirsalis, visible on Tuesday night close to the terminator. Rimae Sirsalis: [SW/L3-4; L=62°W] Just in from the southwest shore

Andrew Planck March 24, 2025March 20, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Moon craters, Rilles on the Moon No Comments Read more

Imposing Trio of Moon Craters

Imposing Trio of Moon Craters

The week of March 17-23 takes us from Lunar Day 18 to Day 24. This week we will highlight the moon craters Theophilus, Cyrillus, and Catharina, visible on Tuesday night close to the terminator. Theophilus, Cyrillus, Catharina: [SE/L12; L=24°E] This

Andrew Planck March 17, 2025March 17, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Moon craters No Comments Read more

Moon Craters Cleomedes and Proclus

Moon Craters Cleomedes and Proclus

The week of March 10-16 takes us from Lunar Day 11 to Day 17. This week we will highlight the moon craters Cleomedes and Proclus visible on Sunday night close to the terminator. Cleomedes: [NE/G15] Cleomedes is the first significant

Andrew Planck March 10, 2025March 6, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Moon craters No Comments Read more

Posidonius and le Monnier – Two Moon Craters on Mare Serenitatis

Posidonius and le Monnier – Two Moon Craters on Mare Serenitatis

The week of March 3-9 takes us from Lunar Day 4 to Day 10. This week we will highlight the moon craters Posidonius and le Monnier visible on Tuesday night. Posidonius/le Monnier: [NE/F-G13; L=30°E] There are only two craters of

Andrew Planck March 3, 2025February 27, 2025 Craters on the Moon, Dates to Observe Objects on the Moon, Floor Fractured Moon Craters, Lunar Days in March, Moon craters No Comments Read more

Moon Craters Langrenus & Vendelinus

Moon Craters Langrenus & Vendelinus

The week of February 24 – March 2 takes us from Lunar Day 26 to Day 3. This week we will highlight the moon craters Langrenus & Vendelinus, visible on Sunday night. The Great Eastern Chain: [SE/K-N16; L=61°E] There is

Andrew Planck February 24, 2025February 21, 2025 chain of moon craters, Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in February, Lunar Days in March, Moon craters No Comments Read more

Regiomontanus: Squashed, Oblong Shape Moon Crater

Regiomontanus: Squashed, Oblong Shape Moon Crater

The week of March 25-31 takes us from Day 16 to Day 21. This week we will highlight the moon crater Regiomontanus, located in the SW quadrant of the Field Map at M9. Regiomontanus: [SW/M9; L=1°W] This is a crater

Andrew Planck March 25, 2024March 23, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Moon craters No Comments Read more

Crater Bullialdus on the Moon

Crater Bullialdus on the Moon

The week of March 18-24 takes us from Day 9 to Full Moon. This week we will highlight the moon crater Bullialdus, located at SW/M7 on the Lunar Map. Bullialdus: [SW/M7; L=22°W] If you recall what Tycho looked like last

Andrew Planck March 18, 2024March 16, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March No Comments Read more

Trio of Moon Craters: Theophilus, Cyrillus, Catharina

Trio of Moon Craters: Theophilus, Cyrillus, Catharina

The week of March 11-17 takes us from Day 2 to Day 8. This week we will highlight moon craters Theophilus, Cyrillus, and Catharina viewable on Saturday night. Theophilus, Cyrillus, Catharina: [Repeated from Day 5–SE/L12; L=24°E] This is the most

Andrew Planck March 11, 2024March 9, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March No Comments Read more

Moon Crater Aristarchus

Moon Crater Aristarchus

The week of March 4-10 takes us from Day 24 to Day 1. This week we will highlight the moon crater Aristarchus, viewable on Tuesday morning an hour before sunrise. Aristarchus: [NW/G5; L=47°W] The moon crater Aristarchus is the brightest

Andrew Planck March 4, 2024March 1, 2024 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in March, Moon craters No Comments Read more
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It is highly recommended that you get a copy of Sky and Telescope's Field Map of the Moon, the very finest Moon map available for use at the telescope. It is available for $10.95 at www.skyandtelescope.com and on Amazon. All features mentioned in this blog will be keyed to the grid on the Field Map and will look like this: Plato: [NW/D9]

Credits: Courtesy of Gray Photography of Corpus Christi, Texas Lunar photos: NASA / USGS / BMDO / LROC / ASU / DLR / LOLA / Moon Globe. Used by permission

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Andrew Planck
Andrew Planck
Author and Astronomer Andrew Planck shepherds you to the moon and its mysteries of intrigue and surprise. Learn about the moon’s most fascinating objects, understand how the moon was formed and the names of many of the craters … and why they honor individuals who have changed the course of history.
Andrew Planck
Latest posts by Andrew Planck (see all)
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