This is a podcast from the children's radio station Fun Kids.

Listen on DAB Digital Radio across the UK or online at funkidslive.com.

Are you ready for this?

I'm so excited for this week's episode.

We've got a real brain buster.

We'll uncover some of the deepest, darkest secrets in the universe.

This is the Fun Kids Science Weekly. Thank you so much for giving us a listen.

My name is Dan. This week we're talking to a space genius all about how stars are born and then why they die.

Also, we'll learn about a mystical giant centipede and we'll discover how astronauts carry on breathing when they're up in space.

First, let's catch up with one of our favourite geniuses here on the Science Weekly.

It's Professor Hallex.

Hallex's Hydration Help Desk. Call accepted.

Hello, Professor. I know we're lucky to have clean tap water in this country, but where does it come from?

Hmm, great question. Let's find out. The water which comes out of the tap has been on a very long journey.

Some of the water we drink comes from rainwater, which has been collected in reservoirs, some comes from rivers and streams, and some comes from aquifers.

Underground reserves of water which have seeped down through the rocks.

Ball holes are used to drill into the aquifer so that the water can be collected.

At this stage the water is unlikely to be fit to drink.

It might have sludge and bits of dead animals in it. Professor!

Don't worry Nanabot. Before it gets to our taps, the water goes through treatment plants

where it's sifted and sifted to remove all the debris and given a good shape to release any yucky gases.

It'll also be filtered many times to remove any sludge.

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