Astonishing! Best photos from Friday's longest-ever Lunar Eclipse

Blood moon to appear for 21st century's longest lunar eclipse

A full moon rises behind the Temple of Poseidon before a lunar eclipse in Cape Sounion near Athens Greece July 27. Reuters Alkis Konstantinidis

The world will witness the longest total lunar eclipse of this century on July 27, 2018.

The moon is set to turn red on Friday in the longest total lunar eclipse of the 21st century, visible across Europe.

Of the 7.4 billion people on Earth, about 7 billion people could - in theory - see the eclipse, except for those in North America and Greenland, where time of day didn't allow.

The red sheen that the moon will take on is entirely dependent on how much dust is in the Earth's atmosphere.

The total eclipse lasted one hour and 43 minutes, with the entire event lasting closer to four hours.

Moreover, the Sun and Mars will also lie opposite to each other, keeping the Earth in the middle. "Less dark eclipses may show the moon as dark grey or brown ... as rust-coloured, brick-red, or, if very bright, copper-red or orange". For viewers in India, the eclipse, both partial and the total, will be visible in its entirety from all parts of the country. This is the longest because for the last four billion years the moon has been moving away from the Earth and has now reached the flawless spot for the lunar alignment. Ursa said that it is perfectly safe to look at the moon with the naked eye, or with binoculars or telescopes. That's because some of the sunlight going through Earth's atmosphere is bent around the edge of our planet and falls onto the moon's surface. "The next total lunar eclipse that will last that long will not occur until 2123", he noted.

Blood moon to appear for 21st century's longest lunar eclipse
The different phases of moon from Kochi Kerala

"The first is that the moon will be passing in a direct line behind Earth, meaning it travels through the widest part of the circular shadow cast by our planet". A lunar Eclipse occurs when the Earth passes between the sun and the Moon, casting a shadow over its satellite.

At 12.19am, the moon will be out of the earth's umbral shadow and the observable eclipse will be over.

Skygazers looking out for the rare "blood moon" lunar eclipse were left disappointed as clouds largely obscured the celestial phenomenon.

As per Christian belief, the blood moon is said to signify the second arrival of Jesus Christ, as stated in Joel 2:31: "The sun shall be turned into darkness, and the moon into blood, before the great and awful day of the Lord come".

The next lunar eclipse visible in Brunei will take place on July 17 next year, but it will be a partial one.

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