Lunar eclipses, caused when the Earth’s shadow passes over the moon, are visible anywhere on Earth where it’s nighttime. Alas, it won’t be nighttime here for the next such eclipse, which with 1 hour 42 minutes 57 seconds of totality will be the longest of the entire 21st century. It happens July 27 and because it’s a total eclipse, will be a “blood moon” where the full moon turns red as it travels through the atmosphere, as explains.

The next lunar eclipse happens Jan. 21, 2019 – we’ll have an excellent view of that.

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