Supermoon and Blood Moon: 2015 will be last time the two lunar events coincide for 18 years

Though the two events happen individually fairly often, it's very rare — and spectacular — for them to happen at once

Andrew Griffin
Sunday 27 September 2015 16:13

Tonight's Supermoon Blood Moon will be the last time the two stunning lunar events will coincide for 18 years.

For the first time this century, tonight will see a Supermoon, when it is close to Earth and therefore unusually big and bright, that will coincide with a lunar eclipse, where the Earth moves between the sun and the moon and scatters the light so that the moon turns red. And it won't happen again until 2033.

Supermoons aren't uncommon, and lunar eclipses happen less often but also aren't rare. But the collision of the two is very uncommon — it's only happened five times since 1900, the most recent of which was in 1982.

Watch the video below for Nasa's explanation of why the spectacle happens:

It will also be the last chance to see a total lunar eclipse on Earth until 2018. That will be after the stunning total solar eclipse that is set to come to the US the year before, an event that is set to spur the biggest movement of people for tourism purposes in history.

The Supermoon will be visible for all of the night of 27 September and the morning of 28 September. But the total eclipse will last just over an hour, occurring in the very early morning in Europe and Africa and the evening for the Americas.

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