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BBCNEWS BBC News December 30, 2021 20:25:15

Transcripts for BBCNEWS BBC News 20211230 20:25:15
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BBCNEWS BBC News December 31, 2021 00:24:00

This is really, really difficult engineering. but, you know, nasa has never shied away from doing hard things and so i have full confidence that it s going to work. unfurling the sun shield is the most difficult part of this process. it s enormous the size of a tennis court. first, its two halves are lowered into position. then, the booms are deployed. the operation involves 400 pulleys, 400 metres of cabling and more than 100 release mechanisms that have to fire at exactly the right time. finally, the material is pulled taut, and the five layers of the sun shield, each as thin as a human hair, separate. the whole process has been rehearsed again and again on earth, but doing this in space will be nail biting. it s made of floppy material and it has to be held onto by a series of pins, which release one by one, pull it out, make it tight, release another bit, pull it out again, until slowly, over days, you pull out this tennis ....

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BBCNEWS BBC News December 31, 2021 04:23:00

Pull it out again, until slowly, over days, you pull out this tennis court sized object. so, for many people working on the project, that s where the real nerves are. the sun shield protects the telescope from the heat and light of the sun. the difference between the hot and cold sides is huge 300 degrees celsius. the telescope needs to operate in the coldest and darkest conditions to see the most distant stars. for the first time, we ll be able to see all the way back to the time when these very first galaxies formed and that will allow us to actually get images of them, verify that they are the very first galaxies, and then we can study how galaxies have evolved over the history of the universe. the images that eventually come back from james webb will be even more spectacular than these, taken by hubble, but there s still work to do. the sun shield will take several days to open, and that s just the start of this complex unfolding process. with so much at stake, it s a tense time ....

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BBCNEWS BBC News December 30, 2021 21:23:00

With a million mile journey ahead. but, as it travels, it has a fiendishly difficult task to do unfolding. it s so big, we didn t have any rocket that s big enough to launch it, you know, fully deployed. so, we had to build this telescope to be folded up, to fit inside the rocket. this is really, really difficult engineering. but, you know, nasa has never shied away from doing hard things. and so i have full confidence that it s going to work. unfurling the sun shield is the most difficult part of this process. it s enormous, the size of a tennis court. first, its two halves are lowered into position. then the booms are deployed. the operation involves 400 pulleys, 400 metres of cabling and more than 100 release mechanisms that have to fire at exactly the right time. finally, the material is pulled taut, and the five layers of the sun shield, each as thin as a human hair, separate. ....

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BBCNEWS BBC News December 30, 2021 19:24:00

And so i have full confidence that it s going to work. unfurling the sun shield is the most difficult part of this process. it s enormous, the size of a tennis court. first, its two halves are lowered into position. then the booms are deployed. the operation involves 400 pulleys, 400 metres of cabling and more than 100 release mechanisms that have to fire at exactly the right time. finally, the material is pulled taut, and the five layers of the sun shield, each as thin as a human hair, separate. the whole process has been rehearsed again and again on earth. but doing this in space will be nail biting. it s made of floppy material, it has to be held on to by a series of pins, which release one by one, pull it out, make it tight, release another bit, pull it out again. until slowly, over days, you pull out this tennis court sized object. so, for many people working ....

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