On Saturday, a comet called A3 (Tsuchinshan-ATLAS) will be visible in the UK skies for the first time in 80,000 years.
It's been nicknamed the 'comet of the century' because it's expected to be super bright and easy to see.
The best time to catch a glimpse is right after sunset, when the comet will be closest to Earth.
To improve your chances, find a spot with a clear view to the west, away from any obstacles.
