The longest partial lunar eclipse of the century will happen on Friday morning, causing the moon to seem red for up to 3.5 hours.

It will obscure the moon for the majority of the planet on November 19, with up to 97 percent of the moon slipping into Earth’s shadow.

The best spot to see the eclipse will be North America, where practically each of the 3.5 hours will be visible, as it will be evening when the eclipse starts.

‘This is an exceptionally deep partial eclipse,’ EarthSky clarified, allowing only a thin sliver of the moon exposed to direct sun light at the mark of most extreme eclipse.

The rest of the moon will take on a ruddy, rust tone, typical of an absolute lunar eclipse and brought about by light waves from the sun being sifted by Earth’s air.

As indicated by the Royal Observatory, Greenwich, the halfway eclipse will be ‘scarcely visible in the UK’ as it happens when the moon is near or beneath the horizon.

Individuals living in North America will see the partial eclipse completely, with those in western Asia, Australia and New Zealand missing the beginning phases.

Moonset occurs in South America and Western Europe before the shroud closes, so will miss the later stages, and it will not be noticeable at all in Africa or the Middle East.

It will be at the mark of most prominent overshadowing, with 97% of the moon covered by Earth’s shadow, at 09:02 GMT when the moon is best seen from Hawaii.

The most punctual phases of the eclipse will start at 06:02 GMT on November 19, with the moon progressively turning out to be more clouded from 07:18 GMT, finishing at 10:47 GMT.

The hour of moonrise and moonset will decide what amount is visible from some random area, and in the UK the moon sets at 07:24 GMT on Friday, a long time before the place of greatest eclipse.

Those in the south of England will start to see the moon become rosy at 07:18, however it will be simply over the skyline and scarcely apparent.

Royal Observatory Greenwich stargazer Dhara Patel, told MailOnline: ‘The partial lunar eclipse on Friday morning will be very tricky to see for those of us in the UK.’

This is on the grounds that moonset happens at 7:24am in London, only minutes after the moon starts to pass into the umbra – the focal piece of the Earth’s shadow.

‘So unless viewers have a clear view of the north western horizon (where the Moon will be setting), it will be incredibly difficult to spot,’ the space expert added.

‘The Moon will however begin to pass into the outer part of the Earth’s shadow just after 6:00am – early risers will be able to see the full Moon over the north western horizon, but the penumbra (outer part of the Earth’s shadow) is weaker and it’s unlikely to create a visible change.’

A lunar eclipse happens when the Earth divides the moon and the sun, making the Earth’s shadow eclipse the moon.

At the point when it is a partial eclipse, the majority of the light from the sun is covered by the Earth, prompting the moon seeming reddish.

In spite of the daylight being hindered by the Earth’s shadow, it twists around the Earth and goes through our climate, which channels out bluer wavelengths of light.

At the point when this sifted starlight arrives at the moon, it comes through as red and orange, making the moon seem redder than expected during the eclipse.

The term of the eclipse relies upon various factors, including where the moon is in its circular circle of the Earth and Earth is in its elliptical circle of the sun.

The whole eclipse, from the main second the Earth’s shadow starts to cover the moon, will be six hours and two minutes, the longest since February 18, 1440.

The duration depends on three things – the distance away the moon is from the Earth, the distance away the Earth is from the sun, and how firmly adjusted the sun, Earth and moon are by then.

On Friday the moon and Earth are at their farthest focuses, and are impeccably adjusted, with the lunar obscuration entering Earth’s obscuration pre-shadow) at around 06:00, the umbra (shadow) after 76 minutes and leaving obscuration at 12:03 GMT.

The umbral eclipse, the part covered by Earth’s full shadow, will keep going for 3 hours and 28 minutes — the longest of the century.

The penumbral eclipse, when the moon goes through both inward and external pieces of Earth shadow, will keep going for 6 hours and 1 moment, the longest in six centuries.

The partial lunar eclipse in July 2019 endured just shy of three hours and one from June 2010 kept going two hours and 43 minutes.

In November 1974 there was a halfway lunar eclipse that endured three hours and 14 minutes, and one in May 1979 that kept going three hours and 18 minutes.

In May 1956 a halfway eclipse endured three hours and 24 minutes, only four minutes not exactly the one due on Friday, as indicated by NASA.

In 1892 a partial lunar eclipse endured three hours and 26 minutes, in 1511 one kept going three hours and 27 minutes, however you need to return to 1440 to make one last more than three hours and 28 minutes, NASA figures uncover.

Earth will not see one more of this term until February 8, 2669, but there is an absolute lunar overshadowing in May 2022, that ought to be noticeable from a large portion of the UK.

In May 2022, ‘people in the UK will not be able to see every part of the eclipse but will still be able to see the lunar eclipse at totality when the entire Moon turns red,’ as per the Royal Observatory, Greenwich stargazers.

Assuming that you actually need to attempt to detect Friday’s shroud from the UK, Dhara Patel’s prompt is to ‘find the most clear perspective on the north western skyline as could be expected, and to go to north-west locales of the UK where moonset will be somewhat later.’

This offers ‘viewers the opportunity to catch the start of the Moon’s passing into the central part of the Earth’s shadow before it sets below the horizon.

‘Viewers will be able to see a visible difference as the shadow edge will begin to appear over the north- west limb of the Moon, making it darker.’

Topics #lunar eclipse #NASA