Cosmos: A Personal Voyage S01 E08 Journeys in Space and Time

"If you wish to make an apple pie from scratch, you must first invent the universe."

A voyage to see how star patterns change over millions of years is followed by a journey to the planets of other stars, and a look at the possibility of time travel. This takes us to Italy, where a young Albert Einstein first wondered what it would be like to ride on a beam of light.