I thought if the scientist will do hard work,more inventions or we can say that we in future times try to approach than it is possible,although scientist do their best. As the film directors made many films based on time travel which rise the humanity power.as my last word i only want to say that in coming years we all will ready to travel in time

If you accept that Einstein was wrong, time travel is theoretically possible. However you have to accept that 1/0 (one divided by zero) is not infinity. How many "nothings" in one? Infinite or none? You pays your money and takes your choice!!!