The comet, called Ikea Jang, is passing Earth for the first time in 350 years.
And it's so bright, that you don't even need a telescope or binoculars to see it.
As long as there's a clear sky, people all over the world should be able to spot the comet from their own back garden.
Here's how to find it:
Comets are very exciting to look at, but they're also extremely useful to astronomers because they help them find out more about the solar system.