"Why does the sun shine?" by They Might Be Giants

The sun is a mass of incandescent gas
A gigantic nuclear furnace
Where hydrogen is built into helium
At a temperature of millions of degrees

Yo ho, it's hot, the sun is not
A place where we could live
But here on Earth there'd be no life
Without the light it gives

We need its light
We need its heat
We need its energy
Without the sun, without a doubt
There'd be no you and me

The sun is a mass of incandescent gas
A gigantic nuclear
Where hydrogen is built into helium
At a temperature of millions of degrees

The sun is hot

It is so hot that everything on it is a gas: iron, copper, aluminum, and many others.The sun is largeIf the sun were hollow, a million Earths could fit inside. And yet, the sun is only a middle-sized star.

And even when it's out of sight
The sun shines night and day
The sun is far away

About 93 million miles away, and that's why it looks so small.

The sun gives heat
The sun gives light
The sunlight that we see
The sunlight comes from our own sun's
Atomic energy

Scientists have found that the sun is a huge atom-smashing machine. The heat and light of the sun come from the nuclear reactions of hydrogen, carbon, nitrogen, and helium.

The sun is a mass of incandescent gas
A gigantic nuclear furnace
Where hydrogen is built into helium
At a temperature of millions of degrees

Hear the original song:
http://www.youtube.com/watch?v=Zbgul1NpEA8&feature=related

Here is a slowed down version featuring real images of the Sun and Earth:
http://www.youtube.com/watch?v=cds3sIzSf_I&feature=related