Know It All

Time Travel  has been one of the most exciting topics for the Science Fiction movies since decades. In such movies we see that people sit in some sort of vehicles and they travel into time and reach to the past or future, full of adventures. But is this really possible? Can we travel into time? According to most of the scientists it is not possible with the best of physics or technological knowledge but some still believe that is possible.  What is time? According to Einstein's Theory of relativity time is relative, it is an illusion, it can vary for different observers depending on their speed through space and not constant as it is believed by many of us. Einstein theory of special relativity says that time slows or speeds up depending on how fast or slow we move relative to something else. This theory also explains the Twin Paradox, that says if one of the twins travels through space with the speed of light while the other twin being on earth, then the one who traveled space wil