[quote]Suddenly Star Trek in 150 years doesn't sound that farfetched...[/quote] I think that would be possible if we could find enough iron/steel/other materials to make space ships faster and easier. However, actually exploring space is a different story, with the nearest star being about 4 light years from here (about 5,878,625,000,000*4.2 ~24,690,225,000,000 miles). We would need a way to create wormholes in order to greatly decrease travel time. But the impulse engine sounds wonderful.