Blood Moon: Diagrams explain how eclipses work. Space.com has a big page of more information about blood moons, lunar tetrads (NASA video), a calendar of the four lunar eclipses 2014-15, and a great downloadable infographic called Shadow on the Moon that sums all this up in graphic form! Most of this will be valid for the next three eclipses as well! Going in Astronomy.

Blood Moon: Diagrams explain how eclipses work. Space.com has a big page of more information about blood moons, lunar tetrads (NASA video), a calendar of the four lunar eclipses 2014-15, and a great downloadable infographic called Shadow on the Moon that sums all this up in graphic form! Most of this will be valid for the next three eclipses as well! Going in Astronomy.

Lunar eclipse: When the moon passes through the Earth's shadow, it causes the moon to look very unusual for a short period of time. This event is called a lunar eclipse, and it occurs roughly twice a year.

Lunar eclipse: When the moon passes through the Earth's shadow, it causes the moon to look very unusual for a short period of time. This event is called a lunar eclipse, and it occurs roughly twice a year.

Lunar Eclipse | Below are some spectacular photos of the total lunar eclipse.

Lunar Eclipse | Below are some spectacular photos of the total lunar eclipse.

The phases of the April 14-15 total lunar eclipse are shown with GMT timestamps in this NASA image from a video guide. The total lunar eclipse will affect two NASA spacecraft orbiting the moon since they rely on sunlight for power.

The phases of the April 14-15 total lunar eclipse are shown with GMT timestamps in this NASA image from a video guide. The total lunar eclipse will affect two NASA spacecraft orbiting the moon since they rely on sunlight for power.

How Lunar Eclipses Work [by Space -- via #tipsographic]. More at tipsographic.com

How Lunar Eclipses Work

The moon turned a blood red over the Sossusvlei Desert Lodge on NamibRand Nature Reserve in Namibia in this stunning photo taken by skywatcher George Tucker on June 15, 2011.

The moon turned a blood red over the Sossusvlei Desert Lodge on NamibRand Nature Reserve in Namibia in this stunning photo taken by skywatcher George Tucker on June 15, 2011.

lunar eclipse on Dec 10, 2011.  Got up early with my youngest and watched the whole thing.  Amazing.

lunar eclipse on Dec 10, 2011. Got up early with my youngest and watched the whole thing. Amazing.

Meteor showers and eclipses of the sun and moon are just some of the amazing stargazing events of 2015. See our list of the best astronomy events of the year in this infographic.<br />

Meteor showers and eclipses of the sun and moon are just some of the amazing stargazing events of 2015. See our list of the best astronomy events of the year in this infographic.<br />

Credit: NASA/JPL-via Kieth BurnsThis montage of images taken by skywatcher Kieth Burns shows the Dec. 20, 2010 total lunar eclipse. The photos won a NASA contest to become an official NASA/JPL wallpaper for the public.

Credit: NASA/JPL-via Kieth BurnsThis montage of images taken by skywatcher Kieth Burns shows the Dec. 20, 2010 total lunar eclipse. The photos won a NASA contest to become an official NASA/JPL wallpaper for the public.

An eclipsed Moon can take on a reddish glow during totality: Veteran eclipse watchers will tell you that if you look really hard right at the beginning and just before the end of totality, you may detect a light blue or turquoise band on the Moon's face. This happens because the Earth's Ozone Layer scatters red light and lets through some of the blue light that gets refracted to the Moon.

An eclipsed Moon can take on a reddish glow during totality: Veteran eclipse watchers will tell you that if you look really hard right at the beginning and just before the end of totality, you may detect a light blue or turquoise band on the Moon's face. This happens because the Earth's Ozone Layer scatters red light and lets through some of the blue light that gets refracted to the Moon.

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