Re: Still haven't graduated from lithium? Try Plutonium.
That little Voyager, now well on its way to Alpha Centauri, (past the Oort belt yet?) is still chugging merrily along with its small supply of Plutonium keeping its engines warm.
That little Voyager, now well on its way to Alpha Centauri, (past the Oort belt yet?) is still chugging merrily along with its small supply of Plutonium keeping its engines warm.