The Hello and welcome to the naked scientist with me Ginny Smith.

Also joining me this week is Dave Ansel.

This week we'll be exploring the power source of the sun. Also joining me this week is Dave Ansel.

This week we'll be exploring the power source of the Sun nuclear fusion.

Talking about what it is and if it might be able to help us down here on Earth.

We've been to jet a big fusion experiment to see how nuclear fusion works and we'll be speaking to someone who's been looking at

fusion in a new way.

The Naked Scientists Podcast is powered by UKfast.co.uk. K

but first you might think that space is pretty dark

but in fact it's bathed in light from all kinds of sources from stars like our sun to other more exotic

celestial objects such as quasars. Quasars are distant objects powered by black holes

billions of times as massive as our sun. These powerful objects

have fascinated astronomers since their discovery half a century ago. Now a team of space

scientists led by researchers at University College London are giving us a view back to the very, very early universe.

Katani spoke to lead researcher cosmologist Dr Andrew Ponson to find out more about the work

and why it's so important to map out the light in the universe.

Well what we're trying to understand is the way that light is distributed through the universe,

which sounds like a kind of odd thing to be a problem because of course we use light all the time to learn about

the universe we see light that's what we're picking up with our

telescopes when we look at the universe but there's this whole other side of

light which is that it's transporting a lot of energy around in the

universe in the same way say the biosphere here on earth is powered by light

...