Host and Executive Producer William Shatner explores our earth, and beyond, in search of our universe's most fascinating, strange and inexplicable mysteries on The UnXplained: Mysteries of the Universe. Each episode features compelling contributions from scientists, historians, witnesses and experiencers--each seeking to shed light on how the seemingly impossible actually can happen. Seeking answers to age-old questions that have mystified mankind for centuries. Things like, how was our earth born? Will we make it back to the moon? Or go even farther? What dangers might lurk in the deep expanse of outer space? And perhaps the biggest of all--are we alone?