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Ah, good morning, my friends. It's a new day, and I see the sun is

up and shining brightly, just like the day before, and the day before that, and every day before that.

But, did you know there was a time long ago when primitive people were scared that when the sun

went down, it might never come back? Oh, no. Also, what exactly is the sun? Where did it come from?

What's it made of? And would it ever burn out? I don't know. To answer these questions and more,

get ready for another whiff of science on Who Smarted?

Who Smart is it you? Isn't me? Is it science? Or history? Listen up!

Everyone, we make smart and lots of fun on Who Smart and...

Hey, kid, quick question. Uh-huh. There are billions of stars in the universe,

but do you know which one is closest to us? I'll give you a hint. You see it every day,

but you shouldn't stare directly at it. Ah, my eyes! That's right. It's the sun. At 93 million miles away,

it's the closest star to Earth. It's sometimes easy to forget that that big, shiny ball dominating our sky

is actually a star. Just like all those tiny twinkling points of light you see up in the night sky.

But it is. It's just much closer to us. Like millions of miles closer. So close, in fact,

that during the day we can feel the heat of the sun on our skin. Did somebody bring sunscreen?

But what exactly is the sun? Hey, yo! I want you to know about my good-pouse sun. I do. And you are...

Names Ray, short for sun-ray? If you got it, no. I've been working pretty closely with the sun

...