Archive for August 16, 2019

08/16/2019 – Ephemeris – The Apollo missions provided clues as to the origin of the Moon

August 16, 2019 Comments off

Ephemeris for Friday, August 16th. Today the Sun will be up for 14 hours and 1 minute, setting at 8:47, and it will rise tomorrow at 6:47. The Moon, 1 day past full, will rise at 9:44 this evening.

Members of the Grand Traverse Astronomical Society will be in Downtown Traverse City for Friday Night Line again this evening. We might get a glimpse of the Moon later tonight. Speaking of the Moon, the rocks brought back from the Moon by the Apollo astronauts turn out to be very similar to earthly rocks. This gave rise to the most popular theory of how the Moon formed. A second planet was born in the Earth’s orbit lazily orbiting at a point 60 degrees ahead or behind the Earth itself. Perturbations possibly by Venus caused it to crash into the Earth with a glancing blow sending debris into orbit of the Earth to become the Moon. It explains the similarity of the rocks of the Earth and and those brought back from the Moon.

The times given are for the Traverse City/Interlochen area of Michigan. They may be different for your location.


How the Moon may have formed

A progression of how the Moon may have fomed by a small protoplanet crashing into the Earth. Credit: Brian Koberlein


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