:00:00. > :00:00.You're with Newsround this Saturday lunchtime.
:00:00. > :00:12.Coming your way: Tim Peake needs help with an experiment.
:00:13. > :00:27.And we'll be speaking to a polar adventurer about his epic trip.
:00:28. > :00:34.First this afternoon, there's been a massive upset
:00:35. > :00:35.in the Australian Open Women's Final.
:00:36. > :00:37.Germany's Angelique Kerber has beaten world number one
:00:38. > :00:41.Serena Williams to win her very first Grand Slam.
:00:42. > :00:44.Serena, who has 21 Grand Slam titles, was trying to make history
:00:45. > :00:51.There's been success too for Scotland's Gordon Reid.
:00:52. > :00:54.He won the men's wheelchair singles competition.
:00:55. > :01:01.And there's the possibility of even more British success this weekend
:01:02. > :01:04.with Jamie and Andy Murray both through to finals.
:01:05. > :01:06.Jamie is playing in the final of the men's doubles.
:01:07. > :01:08.Andy will be playing against world number one
:01:09. > :01:19.I have a very good shot on Sunday if I play my best tennis.
:01:20. > :01:21.I think many people are expecting me to win.
:01:22. > :01:24.I have to just believe in myself, have a solid game plan,
:01:25. > :01:32.and hopefully execute it and play well.
:01:33. > :01:35.There's a new theory about how our planet was formed.
:01:36. > :01:41.Scientists in California say that Earth is made up of two planets that
:01:42. > :01:47.The impact between Earth and a baby planet called Theia was so strong,
:01:48. > :01:51.Researchers say a chunk of that was knocked off
:01:52. > :01:58.Next, British Astronaut Tim Peake is getting stuck into lots
:01:59. > :02:01.of science experiments up on the International Space Station.
:02:02. > :02:03.He's taken more than a million seeds of rocket -
:02:04. > :02:07.that you normally eat in a salad - up to space with him.
:02:08. > :02:12.The aim is to get thousands of children involved in a big
:02:13. > :02:21.experiment to help find ways to grow food in space,
:02:22. > :02:23.which humans will need if they ever travel to distant planets.
:02:24. > :02:26.Now that these seeds have been on the International Space Station,
:02:27. > :02:29.I'll be packing them up at the end of their mission,
:02:30. > :02:31.sending them back to Earth, and when they arrive they'll be sent
:02:32. > :02:35.out to thousands of schools to grow alongside seeds that haven't been up
:02:36. > :02:36.here as part of our science experiment.
:02:37. > :02:39.Those schools will then note the difference between those seeds
:02:40. > :02:43.that have been flown in space and those that have remained
:02:44. > :02:46.It's FA Cup weekend with lots of teams competing
:02:47. > :02:50.It's FA Cup weekend with lots of teams competing
:02:51. > :02:53.Manchester United are already through after beating
:02:54. > :02:57.Manager Louis Van Gaal says his team have got their confidence back.
:02:58. > :02:59.For you, it's obvious they had more freedom.
:03:00. > :03:01.No, I'm sorry, it's the same philosophy, the same training
:03:02. > :03:03.sessions, the past three days, and I give my players,
:03:04. > :03:18.This weekend lots of you might be helping to spot birds
:03:19. > :03:22.Around 500,000 people will be helping the RSPB's annual survey
:03:23. > :03:24.by counting birds to help researchers to learn more
:03:25. > :03:36.Next to a story of great personal achievement.
:03:37. > :03:38.LukeRoberston from Edinburgh has become the youngest British person
:03:39. > :03:42.and the first Scottish person to complete a solo,
:03:43. > :03:44.unassisted and unsupported, expedition to the South Pole.
:03:45. > :03:47.That means he did it all by himself without any support.
:03:48. > :03:51.He had to deal with some pretty difficult challenges including
:03:52. > :03:58.And I'm pleased to say that he joins us now.
:03:59. > :04:04.Thanks for joining us. I wanted to ask you and ensure a lot of kids
:04:05. > :04:09.will want to know, too, why did you do it in the first place? The
:04:10. > :04:17.variety of reasons. I had been inspired by 20th century explorers
:04:18. > :04:22.and recent explorers and I have also had challenges like I've had an
:04:23. > :04:29.artificial pacemaker and I had brain surgery a few months ago. I want to
:04:30. > :04:33.inspire the younger generation to get outside their tents and see how
:04:34. > :04:37.far they can go. You set off in December and got back in the middle
:04:38. > :04:40.of January. What was the most difficult challenge? I can see you
:04:41. > :04:44.got something cleaner the end of your nose and a plaster on your
:04:45. > :04:49.thumb. Explain to us what's going on there. The weather conditions are
:04:50. > :04:54.pretty harsh so there was a lot of wind and snow and caused me to catch
:04:55. > :04:59.a little bit of frostbite on the end of my nose piquancy to the oval but
:05:00. > :05:01.black and green. That will fall off, not my nose, just
:05:02. > :05:04.black and green. That will fall off, should be all good soon.
:05:05. > :05:10.black and green. That will fall off, anticipate would be that difficult
:05:11. > :05:14.and you would sustain injuries? I did a lot of training and research
:05:15. > :05:19.for its way expected to be difficult did a lot of training and research
:05:20. > :05:27.but it was so-called, -65 Celsius at one stage close to the south Pole so
:05:28. > :05:33.very exciting but quite so. I must have been interesting celebrating
:05:34. > :05:39.Christmas out there. It was a waitress miss so I celebrated by
:05:40. > :05:46.skiing 18 miles. -- a white Christmas. One I will never forget.
:05:47. > :05:52.Thank you for coming in to talk to us. What was the first thing you did
:05:53. > :05:53.when you got back? I ate pizza and jellybeans!
:05:54. > :05:57.Newsround's back at 1:45pm with lots more of the day's top stories.
:05:58. > :05:58.Don't forget to check out the quiz of the week