Brian Cox used the best materials from his past projects and the latest scientific research to solve some of the most challenging and interesting problems facing science today. The series includes... Space: How Far Can We Go? (Space: How far can we explore the universe?) Brian believes that we are at the beginning of a new era of space travel, and space flight is about to become a routine. In this episode, he explores the latest science, re examines his old movies, and asks: How far can we go in exploring the universe? Aliens: Are we lonely? (Aliens: Are humans unique?) Brian Cox focuses on one of the most profound questions we can ask - are we alone in the universe? In this movie, he explained why this search should be taken seriously. What is gravity? Brian reexamined the concept of gravity and revealed that gravity is much more than the force that causes an object to land. What is time? Brian explored the mystery of time - we take it for granted, but for physicists, it is one of the biggest mysteries in the universe.