The Big Question: Do aliens exist?

Now we love to think big at Newsround and you guys often ask us the biggest questions out there.

These week's is from Maddison, who's 11 and lives in Wrexham.

And it's one of the biggest of the Big Questions about the universe: Is there life on other planets?

Let's hear from James Fawcett at the Jodrell Discovery Centre.

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