Of all the objects in the cosmos, planets, stars, galaxies, none are as strange, mysterious, or powerful as black holes. Black holes are the most mind-blowing things in the universe. They can swallow a star completely intact. Black holes have these powerful jets that just spew matter out.
First discovered on paper, on the back of an envelope, some squiggles of the pen. The bizarre solution to a seemingly unsolvable equation, a mathematical enigma. Einstein himself could not accept black holes as real. People didn't even believe for many years that they existed. Nature doesn't work that way. Yet slowly, as scientists investigate black holes by observing the effect they have on their surroundings, evidence begins to mount.

A strange light in the heavens. The star that signals the birth of Jesus. Is it faith, fable, or fact? The star of Bethlehem is hard to identify thousands of years later. Can we decode the secret of the star with the science of the universe? What was it? Where did it come from? And will it return?
Discover an explanation by various astronomers and religion historians of what the star of Bethlehem really was based on available evidence.

Zachary Quinto charts a journey to determine whether time travel is possible. He meets a man who claims to have traveled back in time due to a secret government program and a group of people living in Liverpool known as 'time slippers'.
Zachary makes a visit to the CERN headquarters in Geneva, where he attempts to understand the origins of the universe and the dimension of time. Equipped with this new knowledge, Zachary tests his own perception of time with an elaborate skydiving experiment to see if he can slow down time itself.

Space isn't vast and empty space but a dynamic, cosmic storm. It's a storm that could kill us, but without it we wouldn't be here at all. This is a story about the weird connections, the near misses, the lucky breaks that created this amazing world. For 4.5 billion years our planet has been battered and bruised and punched and pummeled but we're still standing. It's actually the battle that's built us and this is the tale of the tape.
Ever wonder how our planet got here? It was born in a cosmic storm. The violence could have destroyed us, but instead it made us.

The sun gives us warmth and light. It is the fuel of life. Without the energy of the sun almost nothing grows, thrives or lives. But the sun was not put there for our benefit. It is not this big jolly ball of nice smiling down on us, wishing us all a good day. It is not our friend. The sun is a monster. A planet killer. And we don't see that side of the sun down here.
But eight astronauts, with over 1,000 days in space between them, can show us how being up there helped them understand the suns bright fury.

We all come from the same place, a moment when a dead rock came to life. Discover the story of how and why life began on Earth, and what makes our planet different from the others.