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Isn't it fantastic, Doctor? | 0:17:02 | 0:17:04 | |
Your brilliance has finally been recognised | 0:17:04 | 0:17:06 | |
at the Rising Star Science Awards. | 0:17:06 | 0:17:08 | |
Oh, come on, Colin. It's just a tacky award ceremony. | 0:17:08 | 0:17:12 | |
Scientists pretending to be celebrities. Cheap laughs. | 0:17:12 | 0:17:15 | |
But what's wrong with cheap laughs, Doctor? | 0:17:15 | 0:17:18 | |
Hey, lads. | 0:17:18 | 0:17:20 | |
I've booked a huge stretch limo to drop us at the red carpet later. | 0:17:20 | 0:17:23 | |
-It's going to be brilliant. -Oh, not you as well. | 0:17:23 | 0:17:26 | |
You can cancel that limo, Professor. I'm not going. | 0:17:26 | 0:17:29 | |
What? But... | 0:17:29 | 0:17:30 | |
BELL RINGS | 0:17:30 | 0:17:32 | |
Positions, everybody! | 0:17:32 | 0:17:33 | |
This is Brain Freeze! With... | 0:17:33 | 0:17:36 | |
..the floor manager. | 0:17:44 | 0:17:45 | |
Stand by! | 0:17:48 | 0:17:50 | |
Hello, everybody, and welcome to Brain Freeze. | 0:17:56 | 0:17:58 | |
It's time for... | 0:17:58 | 0:18:00 | |
Today we're asking... | 0:18:02 | 0:18:03 | |
Our sun is a star, similar to other stars in the universe, | 0:18:05 | 0:18:09 | |
and it constantly produces energy. | 0:18:09 | 0:18:11 | |
How does it do that? | 0:18:11 | 0:18:12 | |
Well, the sun's core is like a really enormous oven, | 0:18:12 | 0:18:15 | |
heated to over 15 million degrees Celsius. | 0:18:15 | 0:18:18 | |
At the centre of this oven, hydrogen comes under huge pressure | 0:18:18 | 0:18:22 | |
and fuses to form helium, | 0:18:22 | 0:18:24 | |
creating massive amounts of energy in the process. | 0:18:24 | 0:18:27 | |
We call this nuclear fusion. | 0:18:27 | 0:18:29 | |
Total confusion, if you ask me. | 0:18:29 | 0:18:31 | |
Anyway, we'll be right back after these. | 0:18:31 | 0:18:33 | |
And we are clear! | 0:18:35 | 0:18:37 | |
So, Dr Knowles, do you have your acceptance speech ready? | 0:18:37 | 0:18:41 | |
I already told you, I'm not going. | 0:18:41 | 0:18:43 | |
Ah, you have to go. The Science Awards are the stuff of legend. | 0:18:43 | 0:18:47 | |
The glitz and the glamour, the fancy seats, | 0:18:47 | 0:18:50 | |
all the lollipops you can eat. | 0:18:50 | 0:18:52 | |
Professor, I became a scientist to explore new horizons, | 0:18:52 | 0:18:56 | |
to change the world. | 0:18:56 | 0:18:58 | |
But...they've got 42 different flavours. | 0:18:58 | 0:19:01 | |
Oh! Well, I've got a science show to finish. | 0:19:01 | 0:19:05 | |
BELL RINGS Oh, crumpets! | 0:19:05 | 0:19:07 | |
We're back in five, four... | 0:19:07 | 0:19:09 | |
-Welcome back. -The sun began life about 4.6 billion years ago | 0:19:10 | 0:19:15 | |
and is currently about halfway through its life cycle. | 0:19:15 | 0:19:18 | |
How on earth do we know that? | 0:19:18 | 0:19:19 | |
From observing the life cycle of other stars, | 0:19:19 | 0:19:22 | |
scientists predict that in about five billion years' time, | 0:19:22 | 0:19:25 | |
the sun will expand greatly and become a red giant. | 0:19:25 | 0:19:30 | |
After this it will continue to release energy | 0:19:30 | 0:19:33 | |
by using up all its remaining fuel, | 0:19:33 | 0:19:34 | |
until finally only the inner core is left, | 0:19:34 | 0:19:37 | |
at which point it is known as a white dwarf. | 0:19:37 | 0:19:40 | |
Giants and dwarves - that's my kind of science. | 0:19:40 | 0:19:44 | |
Dr Knowles, when is the sun going to stop shining? | 0:19:44 | 0:19:46 | |
We can't say for certain, but we think the sun's life cycle | 0:19:49 | 0:19:52 | |
will end in about 6.5 billion years' time. | 0:19:52 | 0:19:55 | |
But what will happen to us? | 0:19:55 | 0:19:57 | |
The earth will have ceased to be inhabitable long before that. | 0:19:57 | 0:20:00 | |
But I've got a feeling us scientists | 0:20:00 | 0:20:02 | |
will have figured something out by then. | 0:20:02 | 0:20:04 | |
PROFESSOR FARTS | 0:20:04 | 0:20:06 | |
-Oh, sorry about that. -Professor! | 0:20:06 | 0:20:07 | |
See you next time! | 0:20:07 | 0:20:09 | |
-And we're clear! Hurry up, everybody, the limo is here! -What?! | 0:20:10 | 0:20:16 | |
Ah, come on, Dr Knowles, there's no way we're leaving you behind. | 0:20:16 | 0:20:20 | |
Oh, this is the worst day of my life. | 0:20:20 | 0:20:24 | |
APPLAUSE | 0:20:24 | 0:20:26 | |
Oh, this is the best day of my life! | 0:20:26 | 0:20:28 | |
I want to thank my family, and my old science teacher, | 0:20:28 | 0:20:32 | |
and my fantastic colleagues at Brain Freeze. | 0:20:32 | 0:20:35 | |
-Hello, everybody! -Hello. | 0:20:35 | 0:20:37 | |
Oh, I just love science so much! | 0:20:37 | 0:20:39 | |
She's getting into it now, all right. See? I told you. | 0:20:39 | 0:20:43 | |
Such a beautiful heart. Perfectly matched to her beautiful mind. | 0:20:43 | 0:20:48 | |
What are you on about? | 0:20:48 | 0:20:50 | |
Here, have another lollipop. | 0:20:50 | 0:20:52 |