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Diamond ring effect. The Moon's surface isn't smooth and just before totality in an eclipse the last bit of sunlight shines through the lunar valleys. ©Mona Evans, “Solar Eclipses” http://www.bellaonline.com/articles/art28395.asp

Solar Eclipses: An Observer's Guide (Infographic) - When the moon covers up the sun, skywatchers delight in the opportunity to see a rare spectacle. Mona Evans, “Solar Eclipses” http://www.bellaonline.com/articles/art28395.asp

If you were on the Moon during a total lunar eclipse, you'd see a total solar eclipse. It might look something like this, with the Earth's nightside faintly shining. (Credit: Hana Gartstein) Mona Evans, "Lunar Eclipses" http://www.bellaonline.com/articles/art28454.asp

Lunar Eclipse infographic. (Credit: Karl Tate) Mona Evans, “Lunar Eclipses” http://www.bellaonline.com/articles/art28454.asp

Solar eclipse, Cairns, Australia 2012. The eclipsed Sun reappearing and peeking through the clouds. (Photo: Bob Winter) ©Mona Evans, “Solar Eclipses” http://www.bellaonline.com/articles/art28395.asp

During a total lunar eclipse, the moon passes through the outer part of Earth's shadow, called the penumbra, and then into the dark umbra. When fully immersed in the umbra, the moon is in total eclipse or in totality. (Credit: Sagredo) Mona Evans, "Blood Moons and Lunar Tetrads" http://www.bellaonline.com/articles/art301030.asp

Total eclipse, Australia November 2012. The clouds have parted long enough to see the solar corona at the time of totality. (SLOOH SpaceCamera - Live Event) ©Mona Evans, “Solar Eclipses” http://www.bellaonline.com/articles/art28395.asp

Solar eclipse, Cairns, Australia (SLOOH SpaceCamera - Live Event) Start of total eclipse November 2012, the skies are partly cloudy. ©Mona Evans, “Solar Eclipses” http://www.bellaonline.com/articles/art28395.asp