Is Time travel theoretically possible or not ?

 science says time travel is viable, but probable now not within the manner you are thinking.

Is time travel possible? quick answer: yes, and you're doing it right now — hurtling into the destiny at the awesome price of one 2d in line with 2d. you are quite an awful lot constantly moving through time on the identical pace, whether you're watching paint dry or wishing you had greater hours
to visit with a chum from out of city. 
Even the slight opportunity of time journey exerts such fascination that many physicists continue to look at no longer best whether it may be viable but additionally how one might do itIs it feasible to journey through time? to reply this query, we ought to be a bit greater precise approximately what we imply by way of visiting thru time. Discounting the ordinary development of time, the query may be divided into two components: Is it feasible, within a quick time (much less than a human existence span), to travel into the remote destiny? And is it possible to journey into the beyond?

Our cutting-edge understanding of fundamental physics tells us that the solution to the primary query is a particular sure, and to the second one, maybe.

"The mechanism for traveling into the remote destiny is to use the time-dilation impact of special Relativity, which states that a moving clock seems to tick greater slowly the closer it strategies the rate of light. This effect, which has been overwhelmingly supported by using experimental assessments, applies to all forms of clocks, which include organic getting old.

"If one were to leave from the earth in a spaceship that would boost up continuously at a at ease one g (an acceleration that might produce a force equal to the gravity on the earth's surface), one would begin to approach the rate of mild relative to the earth inside approximately a yr. as the deliver persevered to accelerate, it'd come ever towards the rate of light, and its clocks could seem to run at an ever slower fee relative to the earth. below such instances, a round experience to the middle of our galaxy and again to the earth--a distance of a few 60,000 light-years--could be completed in simplest a little extra than 40 years of ship time. Upon arriving returned at the earth, the astronaut could be most effective 40 years older, at the same time as 60,000 years could have surpassed on the planet. (word that there may be no 'twin paradox,' due to the fact it is unambiguous that the distance visitor has felt the consistent acceleration for forty years, even as a hypothetical dual left at the back of on a spaceship circling the earth has not.)

"such a trip might pose formidable engineering issues: the amount of strength required, even assuming a perfect conversion of mass into electricity, is extra than a planetary mass. however not anything inside the recognized laws of physics would prevent this type of ride from occurring.