Have you ever felt like you were living through a memory all over again, even though it couldn't have possibly have happened before?

That feeling is known as deja vu, a French term that means 'already seen'... 

In this episode of Mysteries of Science, what causes deja vu, and might it have anything to do with ghosts, past lives, and alien encounters? 

Mysteries of Science is a fortnightly podcast created by The Week Junior's Science+Nature magazine and Fun Kids.

Tap follow or subscribe wherever you're listening to this to make sure you never miss an episode, and get ready for a summer of fascinating mysteries, including Bigfoot and Planet X.

Get three copies of The Week Junior's Science+Nature magazine for just £5. sciencenature.theweekjunior.co.uk/podcast is the place to claim yours.

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