A total lunar eclipse occurs when the Sun, Earth and the Moon line up perfectly.
The Earth will pass between the Sun and the Moon for one hour and 43 minutes this evening.
Most of Europe will see the entire full eclipse apart from the UK, where the Moon is set to be partially visible from 8.49pm BST.
Rain clouds and thunderstorms could obstruct the Moon from the naked eye, especially the first 19 minutes.
The 17th total lunar eclipse this century will also be viewable for many other parts of the world tonight.
The entire continent of Africa will be able to see the eclipse, with people living further east and south getting the best views.
Most of Asia will also see the full Blood Moon, apart from Japan, who will only see the beginning.
North America is in the wrong location to view this particular Blood Moon.
Eclipse 2018: Will you be looking out for the Blood Moon tonight?
People in Brazil may catch a brief glimpse, but the Moon is unlikely to be visible.
What is the Blood Moon?
When the moon is fully in the Earth’s shadow, it turns red which is where the nickname Blood Moon comes from.
The moon will also be as far away as it gets from the Earth on its elliptical orbit tonight, so it will seem smaller in the sky.
Eclipse 2018: Why the Blood Moon is red
Eclipse 2018: A map showing where the blood moon will be seen in Africa tonight
The moon turns red because sunlight is deflected through the Earth’s atmosphere.
This is called reaction and it bends red light from the sun like a lens into the space behind Earth, before it then goes onto the surface of the eclipsed moon.
There is set to be 230 lunar eclipses in the 21st century, according to NASA.
However, only 85 of these all total lunar eclipses.
Mars is also set to be at its closest point to Earth since 2003 tonight and over the coming days.
The planet is expected to be as visible as a “bright red star” in the areas where the skies are clear.
If you miss this lunar eclipse, however, the next time you see the celestial event will be on January 21, 2019.