Browse content similar to 31/05/2016. Check below for episodes and series from the same categories and more!
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Good morning, I'm Ayshah with a special Newsround this Tuesday. | :00:07. | :00:08. | |
Keep watching to find out about a global project | :00:09. | :00:10. | |
which is trying to see further into space than ever before. | :00:11. | :00:21. | |
And how did the first stars and galaxies form? | :00:22. | :00:25. | |
Two massive questions that scientists are hoping to answer, | :00:26. | :00:28. | |
with the world's biggest and most powerful radio telescope. | :00:29. | :00:32. | |
Its HQ will be right here in the UK, but it's being built | :00:33. | :00:35. | |
This week we'll be telling you about, how it could change our | :00:36. | :00:40. | |
For thousands of years humans looked to the skies and have wondered what | :00:41. | :00:54. | |
With our eyes we studied the stars and planets in the night sky, with | :00:55. | :01:07. | |
Ancient peoples believed the stars had | :01:08. | :01:10. | |
special powers and built mystical structures like Stonehenge to study | :01:11. | :01:13. | |
While others learnt to use the sky as a map to help them navigate over | :01:14. | :01:20. | |
Then came one of the most important inventions in | :01:21. | :01:25. | |
A simple piece of glass that makes things that are | :01:26. | :01:35. | |
far away appear close, magnifying the viewing power of our eyes. | :01:36. | :01:38. | |
Using optical telescopes, we found craters | :01:39. | :01:43. | |
and mountains on the moon, spots on the sun, and discovered we are | :01:44. | :01:46. | |
surrounded by other planets in the galaxy called the Milky Way. | :01:47. | :01:55. | |
But around 80 years ago, scientists began to look into the cosmos | :01:56. | :01:59. | |
for the things our eyes could not see, when they invented the radio | :02:00. | :02:02. | |
Sights belonging to the invisible world. | :02:03. | :02:15. | |
What an optical telescope does is enhances the view | :02:16. | :02:22. | |
with your eye so if you got with your eye and look | :02:23. | :02:28. | |
the light goes through your pupil but what telescope does is it | :02:29. | :02:31. | |
increases the side of your pupils to the other | :02:32. | :02:33. | |
to a sceptic and collect more light is he things and magnifies its odour | :02:34. | :02:36. | |
What you see with your eye is the colours of the | :02:37. | :02:41. | |
rainbow but beyond the rainbow there is a whole lot of information | :02:42. | :02:45. | |
of information your eye can't see so beyond the red there is | :02:46. | :02:48. | |
the infrared and then the radio, beyond the Bard is the ultraviolet | :02:49. | :02:51. | |
and then the x-rays and gamma rays so radio | :02:52. | :02:59. | |
you see the universe, a completely different view | :03:00. | :03:01. | |
If humans had radio dishes for eyes we would be | :03:02. | :03:04. | |
able to see through clouds and as much by day as we do by night. | :03:05. | :03:08. | |
That is because these telescopes don't see | :03:09. | :03:09. | |
the stars, but instead see the gas between the stars that produce radio | :03:10. | :03:12. | |
And now scientists are building an giant radio telescope, | :03:13. | :03:16. | |
100 times more powerful than the best in the world. | :03:17. | :03:18. | |
When it's done, it will help us explore what's out | :03:19. | :03:21. | |
there further than we have ever seen before. | :03:22. | :03:25. | |
To let us discover new galaxies, how the universe began and | :03:26. | :03:27. | |
This telescope was built over 50 years ago. | :03:28. | :03:40. | |
It's still one of the most powerful radio scripts in the world. | :03:41. | :03:43. | |
But the telescope scientists are working on | :03:44. | :03:49. | |
now will be 100 times more powerful and the images will be 6000 times | :03:50. | :03:53. | |
But it won't just be one massive telescope like this. | :03:54. | :04:05. | |
Thousands of smaller dishes and up to a million antennae, that will be | :04:06. | :04:09. | |
huddled together over an area the size of 200 football pitches. | :04:10. | :04:14. | |
The telescopes are being built into main countries, Australia and South | :04:15. | :04:41. | |
Africa. They will be faster than any system that exists at the moment. | :04:42. | :04:49. | |
They will be so sensitive, they will be able to pick up signals from | :04:50. | :04:52. | |
planets that are tens of light years away. | :04:53. | :05:05. | |
This is the most exciting science project of this early part of the | :05:06. | :05:12. | |
century. We are going to use it to look backwards in time, write to the | :05:13. | :05:16. | |
beginning of the universe and to answer some amazing questions such | :05:17. | :05:21. | |
as are their beings as intelligent as us out there in the universe. All | :05:22. | :05:29. | |
the telescopes are spaced out, why? You can imagine them being part of a | :05:30. | :05:32. | |
lens. The further they are apart, the sharper the vision. If you add | :05:33. | :05:39. | |
up the areas of all of them, that's equivalent to one very big one. | :05:40. | :05:45. | |
These dishes will be the eyes of the project. And a computer like this | :05:46. | :05:53. | |
one will be the brain. One of the information from the dishes has to | :05:54. | :05:57. | |
go somewhere, like this supercomputer being built right here | :05:58. | :06:03. | |
in the UK. This thing has the power of 1 million home computers. SKA | :06:04. | :06:09. | |
will see more of the complete picture and could change what we | :06:10. | :06:14. | |
know about our universe, and life as we know it, forever. This week I | :06:15. | :06:20. | |
will see where thousands of dishes being built and discover how SKA | :06:21. | :06:30. | |
could help us talk to aliens. Maybe there is life somewhere, in a solar | :06:31. | :06:37. | |
system in another galaxy. And you tell us what it's like to be | :06:38. | :06:39. | |
involved in a project like this. | :06:40. | :06:42. |