Browse content similar to 11/02/2016. Check below for episodes and series from the same categories and more!
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Hello - it's Ayshah here with Newsround on TV and online | :00:00. | :00:00. | |
We've got the latest on a massive discovery by scientists | :00:00. | :00:10. | |
Scientists have just announced that they've made an incredible discovery | :00:11. | :00:23. | |
that will help us fully understand gravity. | :00:24. | :00:27. | |
Because of the force of gravity if you drop something it falls down | :00:28. | :00:31. | |
Now for around 100 years, scientists have had ideas about how | :00:32. | :00:40. | |
gravity might change in space and create | :00:41. | :00:41. | |
Now a US team has been able to prove that those theories are true. | :00:42. | :00:46. | |
Black holes - the strangest objects in the universe. | :00:47. | :00:53. | |
They don't have a surface like a planet or a star and can't be | :00:54. | :00:57. | |
seen, but scientists know they're there because of the way they move | :00:58. | :01:00. | |
Now a group of researchers watching them in space, | :01:01. | :01:03. | |
think they've made one of the biggest discoveries | :01:04. | :01:05. | |
In a galaxy far, far away, two black holes smashed together | :01:06. | :01:13. | |
But it's only now that the shock waves have reached Earth. | :01:14. | :01:21. | |
When you consider that these black holes actually spiralled out over a | :01:22. | :01:28. | |
billion years ago and the signal has been travelling to us since then and | :01:29. | :01:33. | |
we turned on our detectors at just the right time to detect arrive. | :01:34. | :01:36. | |
This is a model of what the scientists actually found. | :01:37. | :01:39. | |
First two black holes spin towards each other. | :01:40. | :01:41. | |
As they get closer they give off waves of gravity, | :01:42. | :01:43. | |
which is a force that attracts things towards each other. | :01:44. | :01:46. | |
These waves get stronger and stronger until the black | :01:47. | :01:49. | |
Professor Stephen Hawking is one of the world's most famous | :01:50. | :01:57. | |
He says that the discovery is a special moment in the history | :01:58. | :02:02. | |
Gravitational waves provide a completely new way of looking at the | :02:03. | :02:14. | |
universe. The ability to detect them has the potential to revolutionise | :02:15. | :02:16. | |
astronomy. By scanning the skies, | :02:17. | :02:18. | |
astronomers can use these waves to find black holes, | :02:19. | :02:23. | |
things that have been completely invisible | :02:24. | :02:26. | |
to the telescopes until now. Scientists hope this will open up | :02:27. | :02:29. | |
parts of the universe that they've Today we've been asking | :02:30. | :02:32. | |
for your opinion on pocket money, It's all because new research has | :02:33. | :02:41. | |
found that most of you get it Some people think that's a bad idea | :02:42. | :02:46. | |
because pocket money can be a good way of helping kids learn | :02:47. | :02:51. | |
important life skills. So we've been asking what you do | :02:52. | :02:53. | |
to earn pocket money. Ayran from Watford says, | :02:54. | :02:56. | |
"I play the guitar to earn my pocket money and I think it's wrong that | :02:57. | :02:58. | |
people just get it free." Izzy who lives in Shrophire told us | :02:59. | :03:01. | |
some of the things she does "I have to vacuum the house, | :03:02. | :03:04. | |
do the dishes, empty Megan from Buntingford | :03:05. | :03:08. | |
in Hertfordshire says, "I think | :03:09. | :03:12. | |
we should work for pocket money, because otherwise it's just | :03:13. | :03:14. | |
like we get a present every week." Now to a classroom | :03:15. | :03:21. | |
with a difference. in Bradford in West Yorkshire have | :03:22. | :03:24. | |
been taking part in a special experiment to help them | :03:25. | :03:29. | |
keep fit and healthy. They're the first in | :03:30. | :03:31. | |
Europe to try it out. Can you spot the difference | :03:32. | :03:36. | |
in this classroom? Here in this class, it's | :03:37. | :03:38. | |
all about...standing. It's part of an experiment to see | :03:39. | :03:48. | |
if standing throughout the day, instead of sitting down, | :03:49. | :03:51. | |
helps improve your health by keeping you more active, | :03:52. | :03:53. | |
so how does it work? To go up, you push this | :03:54. | :03:57. | |
lever and it goes up. To go down, you hold the lever | :03:58. | :04:02. | |
and you push on the top of the desk. When you're standing up, | :04:03. | :04:05. | |
you've got to put your chair to one side and then you put it | :04:06. | :04:13. | |
to the right height by making an L-shape with your elbow | :04:14. | :04:18. | |
and adjusting the height. The results of the tests so far have | :04:19. | :04:21. | |
shown students spend less time What do these guys think | :04:22. | :04:24. | |
of their standing desks? They are more relaxing | :04:25. | :04:28. | |
than when we had the normal desks. They are really awesome | :04:29. | :04:32. | |
because you can stand up or down on them so you don't have to just | :04:33. | :04:35. | |
sit down all the time The stand-up sit-down desks | :04:36. | :04:38. | |
are popular with this class and researchers hope | :04:39. | :04:46. | |
to bring their idea to other schools Hayley will be here at | :04:47. | :04:48. | |
7.40am tomorrow morning. | :04:49. | :04:57. |