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A total lunar eclipse of nearly four hours from beginning to end, the longest expected throughout the 21st century, will occur on July 27, coinciding with the full moon
The fasetotal will last 1 hour and 43 minutes, during which the Earth's natural satellite will acquire a spectacular red or reddish color, popularly known as "19459005" blood moon. ] Much of the eastern hemisphere of the Earth will see some or all of the eclipse. The entire eclipse will be visible from Africa, the Middle East and Central Asian countries. The eclipse will be visible from the east of South America when it ends, and from Australia when it begins.
Unlike solar eclipses, no special equipment is needed to observe lunar eclipses. These last events, which occur when the moon pbades in the shadow of the Earth, can be seen safely at the naked eye, using telescopes or binoculars.
The moon turns bright red or reddish brown during eclipses, a place to darken completely. This is because some of the sunlight that flows through the Earth's atmosphere bends around the edge of the Earth and falls to the surface of the moon. The Earth's air also diffuses more light of shorter wavelength (in colors such as green or blue); what remains is the longest wavelength, the most red end of the spectrum.
The total time of eclipse will be 20.21 GMT on July 27, according to EarthSky.org . The total eclipse will last from 19:30 to 21:13 GMT. There will also be some time before and after when the Moon is in the lightest part of the Earth 's shadow, which is called penumbra. By including this twilight time, the eclipse will last 3 hours and 55 minutes.
"What controls the duration of the lunar eclipse, that is the position of the moon when it travels through the shadow of the Earth," says Noah Petro's Space .com, from the Goddard Center of NASA, which explains that the darkest part of the Earth's shadow is called umbra . You can imagine the umbra as a cone that extends from the Earth in the opposite direction to the sun.
"The moon can pbad through the cone, or go through the middle." This (the medium) has an eclipse of greater duration – indicates.This time, the moon pbades closer to the center of this cone, and so the eclipse is a little longer than the eclipse we had in January. "
Also, the moon will be at a point farther from Earth along its orbit, according to EarthSky. This means that the moon will appear a little smaller in the sky and that it will take a little longer to cross the Earth's shadow.
EFE / Photo: eltiempohoy.es
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