The first line up there includes the iconic words that Carl Sagan uttered when the original Cosmos - A Personal Voyage opened in the eighties. The second line opened the follow-up series titled Cosmos - A Spacetime Odyssey which aired last Sunday with Tyson as the host, who pays tribute to Sagan through these words.
Lets be clear here -we are not meant to live on Mars. You've seen the pictures. Our bodies are built for earth.