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Month: June 2019

Moon Crater Longomontanus: Exception to the Rule Determining Crater Age

Moon Crater Longomontanus

The week of June 24-30 takes us from Day 21 to Day 27. This week we will highlight the crater Longomontanus, viewable on Tuesday and Wednesday in the very early morning. Longomontanus: [SW/P7] Take a look at Longomontanus, just southwest

Andrew Planck June 24, 2019June 24, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in June No Comments Read more

O’Neill’s Bridge and Summer Solstice

In 1953 amateur astronomer John O'Neill, using a 4" refractor, reported having discovered a man-made bridge near the western shore of Mare Crisium.

The week of June 17-23 takes us from Day 15, full moon, to the end of Day 20. This week we will highlight an object informally referred to as “O’Neill’s Bridge,” viewable early Wednesday morning around 1:00 a.m. O’Neill’s Bridge:

Andrew Planck June 17, 2019June 17, 2019 Craters on the Moon, Dates to Observe Objects on the Moon, Lunar Days in June, Unusual Features on the Moon No Comments Read more

Apennine Mountain Range: The Most Spectacular Feature on the Moon

Apennine Mountains on the moon

The week of June 10-16 takes us from Day 8 to Day 14, one day before full moon. This week we will highlight the Apennine Mountains, viewable on Monday and Tuesday evenings. Montes Apenninus: [NW/H9-G10] The Apennine Mountain Range is

Andrew Planck June 10, 2019June 10, 2019 Dates to Observe Objects on the Moon, Lunar Days in June, Mountain Ranges on the Moon, Unusual Features on the Moon No Comments Read more

The Best Place to see Rilles on the Moon

Ariadaeus Rille

The week of June 3-9 takes us from New Moon to Lunar Day 7. This week we will highlight Rima Ariadaeus (the Ariadaeus Rille) viewable on Sunday evening, Lunar Day 7. Rima Ariadaeus: [NE/J11] The best place to see rilles

Andrew Planck June 3, 2019June 3, 2019 Lunar Days in June, Rilles on the Moon 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
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