In this episode, our cast uses awesome analogies to bring the biggest objects, farthest distances, and fastest speeds down to earth.

According to the laws of physics, we can never travel faster than the speed of light...or can we? Light speed allows us to see things instantly here on Earth, and shows us the entire history of the universe going back nearly 14 billion years.

Within our immense universe lies a lesser-known world of tiny particles. From strange ghostly neutrinos that pass right through matter to mysterious objects with names like MACHOs and WIMPs.

Since the dawn of civilization, humans have wondered who or what created the universe. Religion offers a spiritual answer, but do the latest discoveries in physics show evidence of a transcendent intelligence?

Every year, thousands of objects both natural and manmade plummet through our atmosphere and crash into the Earth.

As man moves to colonize the cosmos, the realities of sexual relationships and reproduction need to be addressed. Probe the physiological, psychological, and cultural challenges of sex in space.

Low Earth Orbit, 120 miles above sea level, is where the majority of space exploration has occurred. This 1,100 mile band around Earth is where any private citizen can take the vacation of his or her life on the International Space Station.

Gravity is the most powerful and exacting force in the universe. It is pervasive and penetrating. Gravity binds us together, its reach hangs stars in the sky, and its grip crushes light. Gravity holds planets together and leashes them to their suns.