:00:00. > 3:59:59And of course keep your eye out for the mystery Easter Bunny.
:00:00. > :00:12.Hi everyone, Ayshah here with your Friday Newsround update.
:00:13. > :00:16.First this morning, could this Saturn moon be the best
:00:17. > :00:21.The Cassini spacecraft has been looking at the moon,
:00:22. > :00:26.which has an ocean under its icy surface.
:00:27. > :00:28.It's studied the jets of water blasting out and found
:00:29. > :00:30.that they contain most of the ingredients needed
:00:31. > :00:43.Someone who's used to travelling through time and space is returning
:00:44. > :00:47.Yes, Doctor Who is back and he has a new companion - Bill Potts.
:00:48. > :00:50.We sent Martin to meet the actress who plays her, Pearl Mackie.
:00:51. > :00:58.I have the feeling we're going to be very busy.
:00:59. > :01:05.So give us a little bit of idea into Bill, the character,
:01:06. > :01:08.and what our audience can be expecting from the new assistant.
:01:09. > :01:11.I think Bill, she's great, man, she's really cool,
:01:12. > :01:14.she's very normal, very much like someone you'd bump
:01:15. > :01:21.She has a very direct way of looking at things, and she sort of,
:01:22. > :01:23.she asks a lot of questions that haven't been asked
:01:24. > :01:27.Why did they keep saying "exterminate"?
:01:28. > :01:33.Wouldn't it be quicker to just say "kill"?
:01:34. > :01:39.And what was it like going into the Tardis for the first time?
:01:40. > :01:45.It is genuinely bigger on the inside.
:01:46. > :01:51.There's so many things to play with, it's great.
:01:52. > :01:56.If you see shots with me in the background playing
:01:57. > :01:58.with things, that's genuinely me just playing
:01:59. > :02:04.with things in the background because it's really fun!
:02:05. > :02:07.What can Doctor who fans look forward to in this series?
:02:08. > :02:09.Oh, we've got some epic adventures to be had,
:02:10. > :02:12.we go to some amazing places, with some epic sets.
:02:13. > :02:21.incredible. Did you get scared when you saw any of the monsters in front
:02:22. > :02:27.of you? Because I get scared with some of them! A lot of them, there
:02:28. > :02:31.are some in the end of the series that are pretty terrifying. There
:02:32. > :02:37.are some that you are in the scene and then they appear and you go...
:02:38. > :02:44.Which is good because that is what the character would do. Is it true
:02:45. > :02:50.that the Doctor is regenerating at the end of the year? Yes, in the
:02:51. > :02:58.Christmas special. I'm just happy that I got to work with Peter, his
:02:59. > :03:00.Doctor is wonderful and I'm lucky that I got cast in this season.
:03:01. > :03:02.It was a frustrating night for Manchester United
:03:03. > :03:04.in their Europa League quarter-final first leg, away against
:03:05. > :03:08.They dominated the match and took a deserved lead early
:03:09. > :03:12.on thanks to this goal from Henrikh Mkhitaryan.
:03:13. > :03:16.Despite that, United couldn't add another and were punished late
:03:17. > :03:19.on when Leander Dendoncker scored this fantastic header,
:03:20. > :03:25.the only shot Anderlecht had on target in the entire game.
:03:26. > :03:27.We're inspired by animals for all sorts of things,
:03:28. > :03:29.like robots, transport, and even our clothes.
:03:30. > :03:31.But did you know some of them are helping us
:03:32. > :03:38.Dragons and vampires may be pretty scary but they are
:03:39. > :03:52.OK, we're not talking about this kind of dragon,
:03:53. > :03:56.These fearsome reptiles have around 80 different types of bacteria
:03:57. > :03:58.living in their spit, but for some reason they don't
:03:59. > :04:02.So scientists think they must have really good immune systems,
:04:03. > :04:15.A group of scientists in America investigated the dragons' blood
:04:16. > :04:17.and found that it actually helped to fight infections
:04:18. > :04:22.But it's not just Komodo dragons who have been helping us.
:04:23. > :04:23.Some jellyfish have special chemicals in them
:04:24. > :04:30.Doctors have made dye inspired by jellyfish to help them find
:04:31. > :04:33.As for vampires, it's not quite what you might be thinking.
:04:34. > :04:35.No, not these bloodsuckers but vampire bats.
:04:36. > :04:42.Their spit contains something which thins blood to help them feed.
:04:43. > :04:45.Scientists have used this to develop medicine to help stop dangerous
:04:46. > :04:54.That's it for now, join me in about half-an-hour when I'll tell
:04:55. > :04:56.you more about this polar dog sledging race!
:04:57. > :05:02.It's so much fun and they're so cute.
:05:03. > :05:07.Hey, guys. We just wanted to say we love The Next Step,