KNOWN UNIVERSE BIGGEST and SMALLEST Format:DVD The Python Hunters head out

The Python Hunters head out braving alligators

29 years later

Now Sarah is juggling her job as a preschool teacher

Paranormal debunker DR

KNOWN UNIVERSE BIGGEST and SMALLEST Format:DVD The Python Hunters head outFrom the enormous universe in which we exist to tiny atoms that make up the building blocks of everything around us, size matters when it comes to understanding the cosmos. Starting with our solar system, National Geographic explores the true meaning of the words "big" and "small". Our neighborhood of planets may seem vast but compared to the size of our Milky Way galaxy, our solar system is really tiny. And our galaxy is only one of about 100 billion