On 27th July 2018 a total eclipse of the Moon will be visible from Africa, Europe and western Asia. As seen from Britain, the Moon will rise totally eclipsed in the south-east at about 9.00 p.m., appearing as a dim coppery globe directly above brilliant red Mars. The Moon will start to reappear at about 10.15 p.m. The eclipse will be the longest of the 21st Century, with totality lasting for 1 hour and 43 minutes. From start to finish, the Moon will take nearly 4 hours to cross the Earth's dark umbral shadow.
What is a total lunar eclipse? A lunar eclipse occurs when the Earth comes between the Moon and the Sun, causing the Earth's shadow to cover the Moon. According to NASA, the Moon often turns reddish during totality because the sunlight bending through the Earth's atmosphere during sunsets and sunrises is then reflected onto the Moon.