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en.wikipedia.org/wiki/Lunar_eclipse

A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow) ... A central lunar eclipse is a total lunar eclipse during which the moon passes through the centre of the Earth's shadow. ... This can happen only just before sunset or just after sunrise, and both bodies will appear just above the  ...

www.mreclipse.com/Special/LEprimer.html

Sep 22, 2014 ... It happens because the Moon is directly opposite the Sun in the sky ... Geometry of the Sun, Earth and Moon During an Eclipse of the Moon

spaceplace.nasa.gov/eclipses/en

5 days ago ... A solar eclipse happens when the moon gets in the way of the sun's light and casts its shadow on Earth. That means during the day, the moon ...

www.timeanddate.com/eclipse/total-lunar-eclipse.html

It happens when Earth comes between the Sun and the Full Moon and blocks ... During a Total Lunar Eclipse, the Sun, Earth and the Moon form a straight line.

stardate.org/nightsky/eclipses

Lunar eclipses can only happen when the Moon is opposite the Sun in the sky, ... The Moon casts its shadow on Earth's surface during a total solar eclipse.

www.space.com/15689-lunar-eclipses.html

Feb 16, 2017 ... A total lunar eclipse can happen only when the sun, Earth and moon ... on the moon during a lunar eclipse: The umbra is a full, dark shadow.

earthsky.org/astronomy-essentials/what-is-a-penumbral-eclipse-of-the-moon

Feb 10, 2017 ... During a penumbral eclipse, observant people in the right spot on Earth ... Lunar eclipses happen a minimum of two times to a maximum of five ...

www.skyandtelescope.com/observing/solar-and-lunar-eclipses-in-2017

Jan 5, 2017 ... Conversely, a lunar eclipse takes place during full Moon, when our ... don't happen at every new and full Moon because the lunar orbit is tipped ...

www.ck12.org/earth-science/Eclipses/lesson/Eclipses-HS-ES

Feb 24, 2012 ... During a lunar eclipse, the full Moon moves through Earth's shadow. The umbra is ... Why don't eclipses happen at every new and full moon?

earthsky.org/space/why-isnt-there-an-eclipse-every-full-moon

Feb 9, 2017 ... A lunar eclipse happens when the Earth, sun and moon align in space, with ... A solar eclipse happens at the opposite phase of the moon – new moon .... during a full moon the shadow of the earth does not cover the moon.