Question

I think time travel is not possible, as any object/person who goes in the future/past, would add its mass to the future/past's system, which would violate the Law of Conservation of Mass and Energy. What are your views on it?​

Answer 1

Explanation:

The concept of time travel has always captured the imagination of physicists and laypersons alike. But is it really possible? Of course it is. We’re doing it right now, aren’t we? We are all traveling into the future one second at a time.

But that was not what you were thinking. Can we travel much further into the future? Absolutely. If we could travel close to the speed of light, or in the proximity of a black hole, time would slow down enabling us to travel arbitrarily far into the future. The really interesting question is whether we can travel back into the past.