Andrew Planck

Astronomer, Teacher, Musician

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Sirsalis

Rimae Sirsalis: Two Small Overlapping Moon Craters – Sirsalis and Sirsalis A

The week of December 23-29 takes us from Lunar Day 23 to Day 29. This week we will highlight a feature called Rimae Sirsalis, visible on Thursday night. Rimae Sirsalis: [SW/L3-4; L=62°W] Just in from the southwest shore of Oceanus

Andrew Planck December 23, 2024December 6, 2024 chain of moon craters, Lunar Days in December, Rilles on the Moon No Comments Read more

Rimae Sirsalis – Series of Rilles on the Moon

Rimae Sirsalis – Series of Rilles on the Moon

The week of October 9-15 takes us from Day 25 to Day 1. This week we will highlight a series of rilles called Rimae Sirsalis, located in the SW quadrant of the Field Map and viewable on Tuesday morning before

Andrew Planck October 9, 2023October 6, 2023 Dates to Observe Objects on the Moon, Lunar Days in October, Rilles on the Moon No Comments Read more

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