During the eclipse, the moon will pass through Earth's darkest shadow and take on a red sheen, with the phenomenon being described as the "blood moon".
"It's called a blood moon because the light from the sun goes through the earth's atmosphere on its way to the moon and the earth's atmosphere turns it red in the same way that when the sun goes down it goes red", Andrew Fabian, professor of astronomy at the University of Cambridge.
The moon will be totally eclipsed for an estimated 1 hour and 43 minutes in the prime viewing region, according to NASA predictions.
Red light had a better chance of doing so for the same reason the sky was blue - shorter wave-lengths were scattered more efficiently by the molecules in our atmosphere.
"The eclipse will already be underway when the moon rises above the south eastern horizon at about 8.50pm and the total eclipse will end by about 10.15pm".
A "blood moon" happens when Earth's moon is in full eclipse and has no special astronomical significance, rather, the view in the sky is striking as the usually whitish moon becomes red or ruddy-brown.
Kiwis to get glimpse of blood moon
No other Lunar Eclipse will be as long as this in the century. The Earth orbits, or goes around, the sun.
"While more common than the solar eclipse, the event is nonetheless fairly unusual, with even partial eclipses rarely happening a couple of times or twice per year and each is only visible from a portion of the Earth". Once in a while, Earth lines up directly between the sun and the moon.
By the time the blood moon is rising on Friday evening in the United Kingdom, it will have begun to pass out of Earth's shadow - although it will still remain quite red. Since the moon will be at its farthest point from earth, it will take more time to pass through earth's shadow.
"Hence the appellation of "Blood Moon". At least two lunar eclipses happen every year. A lunar eclipse can last for a few hours.
There are multiple YouTube channels showing the lunar eclipse 2018 live stream so that enthusiasts do not miss out on one of the remarkable events of the century.
There are solar and lunar eclipses, which occur in multiple ways. In India, it will be seen in Delhi, Mumbai, Bengaluru, Chennai, among other major cities from 11:44 pm IST, and the first phase is expected to set in from 11.54 pm IST and the entire eclipse from 1.00 am IST on July 28. This will be quite noticeable to the naked eyes. Also, since it will be a full moon night, Guru Purnima is being observed in India on the auspicious day.
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