14/04/2017 Newsround

And of course keep your eye out for the mystery Easter Bunny.

Hi everyone, Ayshah here with your Friday Newsround update.

First this morning, could this Saturn moon be the best

The Cassini spacecraft has been looking at the moon,

which has an ocean under its icy surface.

It's studied the jets of water blasting out and found

that they contain most of the ingredients needed

Someone who's used to travelling through time and space is returning

Yes, Doctor Who is back and he has a new companion - Bill Potts.

We sent Martin to meet the actress who plays her, Pearl Mackie.

I have the feeling we're going to be very busy.

So give us a little bit of idea into Bill, the character,

and what our audience can be expecting from the new assistant.

I think Bill, she's great, man, she's really cool,

she's very normal, very much like someone you'd bump

She has a very direct way of looking at things, and she sort of,

she asks a lot of questions that haven't been asked

Why did they keep saying "exterminate"?

Wouldn't it be quicker to just say "kill"?

And what was it like going into the Tardis for the first time?

It is genuinely bigger on the inside.

There's so many things to play with, it's great.

If you see shots with me in the background playing

with things, that's genuinely me just playing

with things in the background because it's really fun!

What can Doctor who fans look forward to in this series?

Oh, we've got some epic adventures to be had,

we go to some amazing places, with some epic sets.

incredible. Did you get scared when you saw any of the monsters in front

of you? Because I get scared with some of them! A lot of them, there

are some in the end of the series that are pretty terrifying. There

are some that you are in the scene and then they appear and you go...

Which is good because that is what the character would do. Is it true

that the Doctor is regenerating at the end of the year? Yes, in the

Christmas special. I'm just happy that I got to work with Peter, his

Doctor is wonderful and I'm lucky that I got cast in this season.

It was a frustrating night for Manchester United

in their Europa League quarter-final first leg, away against

They dominated the match and took a deserved lead early

on thanks to this goal from Henrikh Mkhitaryan.

Despite that, United couldn't add another and were punished late

on when Leander Dendoncker scored this fantastic header,

the only shot Anderlecht had on target in the entire game.

We're inspired by animals for all sorts of things,

like robots, transport, and even our clothes.

But did you know some of them are helping us

Dragons and vampires may be pretty scary but they are

OK, we're not talking about this kind of dragon,

These fearsome reptiles have around 80 different types of bacteria

living in their spit, but for some reason they don't

So scientists think they must have really good immune systems,

A group of scientists in America investigated the dragons' blood

and found that it actually helped to fight infections

But it's not just Komodo dragons who have been helping us.

Some jellyfish have special chemicals in them

Doctors have made dye inspired by jellyfish to help them find

As for vampires, it's not quite what you might be thinking.

No, not these bloodsuckers but vampire bats.

Their spit contains something which thins blood to help them feed.

Scientists have used this to develop medicine to help stop dangerous

That's it for now, join me in about half-an-hour when I'll tell

you more about this polar dog sledging race!

It's so much fun and they're so cute.

Hey, guys. We just wanted to say we love The Next Step,