Dr Massey explained the supermoon which causes the Moon to appear larger near the horizon than it does higher up in the sky.
The eclipse will start at 01:11 BST, when the Moon enters the lightest part of the Earth's shadow, known as the penumbra, and adopts a yellowish colour. At 03:11 BST, the Moon completely enters the umbra - the inner dark corpus of our planet's shadow.
The point of greatest eclipse occurs at 03:47 BST, when the Moon is closest to the centre of the umbra. The sky show is over by 05:22 in the morning on Monday.
The Royal Astronomical Society says that unlike the solar equivalent, a total lunar eclipse event is safe to watch and needs no special equipment.
The next total lunar eclipse visible in its entirety from the UK will be in 2019.