Nuggets from Cosmos, Creator, and Human Destiny—A Wild Goose Chase Through “Space”?

Hawking claims that if the human race is to survive, we must migrate to distant star systems and then spread out onto widely scattered planets. He offers no guesses as to how many centuries it could take to reach this capability, and since the propellants we currently use can only get us there in thousands or even millions of years, Hawking says we will have to use matter/antimatter annihilation propulsion such as that described in the Star Trek television series. What? Star Trek is science fiction—yet this is the only hope that one of the smartest men alive holds out for human survival?