Marie Drake Planetarium

Where the stars always shine in Juneau, Alaska

Blood Moon

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Tuesday November 28, 2017 6:30 PM - 7:30 PM

posted by Cristina della rosa

Join John Kremers for a free presentation.

While Blood Moon is not a scientific term, it is used colloquially to refer to a total lunar eclipse, because a fully eclipsed Moon often takes on a reddish color. So why does the Moon turn red?

A total lunar eclipse happens when the Moon travels through the Earth's umbra, the dark central portion of its shadow, and the Earth blocks all direct sunlight from falling onto the Moon's surface. However, the Moon does not turn completely dark during a total eclipse as part of the sunlight still reaches the lunar surface indirectly, via the Earth's atmosphere.

On January 18th, 2018 a total lunar eclipse will be visible in Juneau.

'The Stars Tonight' showing Juneau's current night sky on our Spitz projector will also be presented.

Questions? Call John at (907) 723-9012