I agree with pizzaguy.<br /><br />My friends and I were having this time travel discussion, they believed that in the distant future, time travel would be possible. I would always tell them that there will never be time travel because we wouldn't have major terrorist attacks, wars, etc.... Because someone would have been sent back to stop that event from happening.<br /><br /><br />I like the idea about going faster than the speed of light for 100 light years, then taking your ultra-super-powerful telescope and looking back at Earth, seeing the dinosaurs roaming the Earth. <br />Lets say in the future we are using these ultra-powerful optical telescopes that can see distant planets such as Earth that have life on them. Since the light that we would be seeing could be millions of years old, then the planet might not contain life anymore.