Moon may have been habitable 4 billion years ago

Credit NASA

Credit NASA

This week will see a total lunar eclipse, and it will be the longest one of the 21st Century.

This one is extra special - firstly because it will be the longest this century at a whopping one hour and 43 minutes. That means "the moon will come inside the shadow of the Earth and will stop receiving the light from the sun", Diego adds. Unfortunately, not all areas in the nation are able to satisfy it. These events will play out simultaneously over the night sky, on the final hours of July 27, and the early hours of July 28.

Where can Blood Moon be seen?

The moon will be in the southeast of the sky when it rises. The two planets will be just 57.6 million kilometres apart on Tuesday while on Friday, Mars will be in opposition. In a famous passage in the Book of Joel in the Hebrew Bible, it warns that "the sun will turn into darkness, and the moon into blood, before the great and awful day of the Lord comes".

Red light has a better chance of doing so because shorter wavelengths of light are scattered more efficiently by the molecules in our atmosphere and red has a relatively long wavelength. There is strong evidence of a large amount of water in the lunar mantle that is thought to have been deposited very early on in the Moon's formation, researchers said.

As the moon lines up with the Earth and the Sun, the moon will darken in colour switching from its silvery glow to a rustic, dark red colour. A lunar Eclipse occurs when the Earth passes between the sun and the Moon, casting a shadow over its satellite. Lots of dust creates a deep red eclipse, while less dust produces a bright coppery hue.

The partial eclipse begins when the moon first touches the penumbra or outer shadow of Earth.

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The next total lunar eclipse in the United Kingdom will take place on January 19, 2019.

The hype around the Eclipse of July 27 appeared because it will last a long time.

But if you're going to be in a part of the world where you won't get a direct view of the eclipse (or if it's cloudy where you are), you do have some options.

Pagasa astronomers said they would set up a viewing telescope at the observatory in Quezon City, but were not optimistic they would get to observe the eclipse in its full glory, even with state-of-the-art lenses. "Personally, I'm far more drawn to using the lunar allure as an element in my landscapes, or using the moonlight as a light source".

In the United Kingdom, the blood moon will take place on the night of Friday the 27th July 2018.

However, this latest research paper lists a series of arguments showing that life could have endured on the lunar surface and not be immediately wiped off four billion and 3.5 billion years ago. "Of course, the issue of shutter speed is always there; too slow an exposure and all we'll see is an unsightly lunar streak, even with a wide-angle lens".

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