I figured this could be a fun topic since there seems to be a couple intellectual individuals on the forums. Time travel is a very real thing that has already been accomplished on a minute scale by a Russian cosmonaut Sergei Krikalev. He spent 800+ days aboard the space station moving roughly 17,000 miles per hour and upon coming back the very precise and accurate clocks they use were all .02 seconds slower. Now if you can increase speed to close to the speed of light (sounds easy enough, lol) and circumnavigate the milky way for instance it is a journey of about 150 light years. So when you leave your family knows it will take you 1,500,000 years (edited for math error) before your return. Moving at the speed of light 150 light years takes about 23 years to do. So you will spend 23 years in a ship traveling at the speed of light but upon your return it will now be 1,500,000 years into the future. It's absolutely amazing! The calculation relies on Einstein's Theories of Relativity which state that the passage of time is relative, and different, for two objects moving at different speeds or experiencing different levels of gravity. And to clarify, I know this is not actually called Time Travel but instead called Time Dilation, but would you have been as excited to read this post if I used the word Time Dilation instead? probably not. With advancements in physics via the Hadron Collider, I can see us actually getting closer to the speed of light within the next 100 - 200 years possibly. Look how far we've come in the past 100 years and that was starting with basically no technology. From what I have gathered over the years is it would take high levels of anti-matter colliding with matter in order to produce untold amounts of high-energy which could essentially be used as thrust. To think we are on the edge of this technology is inspiring and makes me only hope I am alive to witness its fruition. But to know that Time Travel into the future has already been done (through Time Dilation) is astonishing and proves it is possible. This kind of stuff is what keeps me up for 2 days in a row with no sleep.