Don't know if this belongs in mature topics or off topic, but it seems like it takes a certain level of maturity to accurately discuss science :P so i'll just post it here.
Last night I was watching Into The Universe with Stephen Hawking on Netflix and I was watching an episode about Time Travel and if it's possible. Long story short it was said that while Traveling to the past is impossible (due to wormholes eating up too much feedback and caused a paradox), time travel to the future is very possible and could actually be accomplished, just not in the traditional sense. In the show, he said that The farther we are from earth and the closer we travel at the speed of light, the slower time goes. Meaning that if we traveled to 90-99% near the speed of light (or what sci-fi movies call FTL or Hyperspace), we hit a cosmic speed limit that slows down our movement at that speed to prevent us from breaking the speed of light, and in turn we slow down time itself. Not to mention also that the greater the mass of an object is, the slower time appears to move (ofcourse on earth this is only measured by a billionth of a second which is not even noticeable, but in larger quantities it would undoubtedly be noticed)
Anyway, to keep it short, it was determined that reaching the speed of light, which to be honest would be the only way we could reach outer planets and neighboring star systems within a reasonable amount of time, would result in literaly travelling through time to the point of which having spent a week in a ship traveling at 99% the speed of light, would result in having passed 2 years on earth. Having said this, wouldn't it be impossible to travel between planets or systems? By the time they reach the planet for the ship's crew it will have only been a week but on earth it will have been 2 years! Imagine longer! How could we ever transfer the data before the people working on earth died of old age? Its mind boggling, really.
Also, doesn't this rule out the possibility that aliens could ever actually VISIT us? I mean I'm sure they are out there and I'm sure we are not alone in this vast universe, but if travelling through space fast enough to reach great distances results in a breach through the fabric of time, wouldn't it become impossible?
Don't know if this thread is gonna catch on but i'd like to hear some opinions on this :P