time travel

क्या टाइम ट्रेवल संभव है | IS TIME TRAVEL POSSIBLE | Interesting Facts| Black hole | Wormhole | Theory of relativity | Einstein <br />Time travel has been the most interesting science topic among us. In this explanatory video, you will get to know how the concept of time travel is based on great scientist Einstein's general theory of relativity, black holes and wormholes. <br />If you find this video helpful in any way, don't hesitate to share it. <br />Have any question or suggestion, say it in comment box. <br />and please subscribe this channel.