Hello, welcome along. It is the Fun Kids Science Weekly. My name's Dan. This is the show where we try to uncover all the secrets that are hidden away out there in the universe. This week we've actually got a proper science genius, like a bona fide expert, answering one of your questions, the ones that you've sent in

to the Apple podcast store. Libby Jackson, she's a friend of the show, she's been on before,

she works at the UK Space Agency, and she's hearing a bit to tell us a little bit more about

gravity and why it does what it does. Also, we'll talk about why your dogs can actually be pretty deadly,

and we'll check in with one of our old favorites, the Thwaites Glacier. See how that's getting on

floating around near the South Pole? We'll do that a little bit later. First, let's get a lesson

from the smartest school outside of the solar system. This is Professor Pulsar at Deep Space High.

Deep Space High, destination

Mars. Jumped to a wormhole and travel to Deep Space High. The school is space, but hurry,

because lessons are about to begin. Whoa! Making me! So, we've seen that Mars is a pretty interesting place, and Earthlings are certainly very excited about it. Can anyone tell me why? Is it because there might be aliens there? That's right. Although from all the probes and robots that have been sent there, we know that there aren't any three-headed monsters. Well, not that we've seen. I wasn't talking about you, Quot,

but yes, there are lots of reasons or clues to think there might be life on Mars. Who can remember

any of the clues? Well, even though it's colder than Earth, it's not too freezing or too

hot for humans to survive

there. And if humans could, maybe other life could too. Exactly right. After Earth, Mars is the

most Earth-like planet in the solar system. It's in something called the Goldilocksum. It's close enough

to the Sun to be able to sustain life, not too hot that any life is

just blasted away, and not too cold that there's not enough energy for life forms to survive.

Any other clues? Anyone? Okay, I'll give you a clue.

It's water. That's right. The possibility of running water on Mars is a clue that there might be like.

We can see patterns in the rock and dark stripes across the land that suggest there were rivers once.

And maybe that water is still there under the surface of the planet.

There's another substance that's been found on the planet.

...