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Lunar Eclipse 2018 Guide: When, Where & How to See the Blood Moon

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Lunar Eclipse 2018 Guide: When, Where & How to See the Blood Moon

Postby MrFredPFL » Thu Jul 26, 2018 12:21 am

Story :

2018 features two lunar eclipses, one in January and the other in July. On Jan. 31, there was a spectactular Super Blue Blood Moon eclipse. The July 27 Blood Moon will be the longest total lunar eclipse of the 21st century. Both will be total lunar eclipses, when the full moon passes through Earth's shadow.

Lunar eclipses are visible from anywhere on Earth where it is nighttime. However, the duration of the eclipse you see will depend on how close to moonrise or moonset the eclipse starts in your location. During total lunar eclipses, the moon turns a deep red color when it enters the depths of Earth's shadow. So why doesn't the moon just look like it's in darkness? The color change happens because Earth's atmosphere acts as both a lens and a scattering medium for the sun's light.

As light passes through any medium, it slows down a bit, and bends. So some sunlight gets bent toward the moon's surface as it passes through Earth's atmosphere during an eclipse. If you were standing on the moon, observing the Earth during a lunar eclipse, you'd see a ring of light around the Earth's edge as it passed in front of the sun. In addition to the bending, air scatters short-wavelength light more than longer-wavelength light. Colors such as green and blue have shorter wavelengths than red or orange, so they scatter more — and what's left is the redder end of the spectrum.

This graph shows the path of the July 2018 total lunar eclipse, and times when the event will be visible.

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Re: Lunar Eclipse 2018 Guide: When, Where & How to See the B

Postby troyharper » Wed Aug 29, 2018 2:17 am

Too bad I missed this but I've seen a lot of great photos online.
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