I have postulated that time is actually a velocity, which I generally refer to as one's temporal velocity. All matter possesses this temporal velocity, which we inherit upon conception. We can alter our temporal velocity by increasing or decreasing our physical velocity. The energies with which we move through time are tied to those which we use to travel through space, so an increase in one velocity requires a reduction in the other. This also demonstrates why time moves forward, and why travelling slower through time, or even backwards, would require a tremendous amount of energy. Under this theory, you would have to reduce your physical velocity to exceedingly high numbers (so, moving faster than the speed of light) in order to reduce your temporal velocity to negative numbers (i.e. going back in time).You would, essentially, remove yourself from our universe in order to travel back in time, then have to re-emerge back in this universe at the time at which you wanted to arrive, somehow using the laws of physics in the alternate universe (which you cannot know beforehand) to slow your speed back below the speed of light. So, yes, time exists, and is mildly manipulable by individuals, by their control over their own speed. The old adage of, "if you move faster, time moves slower, and the longer you will live," does actually apply in this theory.

Dear @omprakashgupta, present, past and future is our human and modern way of perceiving the sequence of actions. Even different cultures perceive differently that reality. I will say again, the past doesn't exist, it's only our memory (chemical mix our brain): The future (events which are about to happen) also doesn't exist, there are our predictions and imaginations what is going to happen. Present (what is happening now) only exists. According to this, I don't believe creating the time machine is possible.

Dear Asgardians,sir, With due regard ,according to my opinion,TIME has it's three parts, PRESENT,PAST and FUTURE. Present changes into Past and it makes FUTURE also.So it proves the existence of time. It does not exist into the human heads.Human heads and the universe is mortal but TIME is invissible and immortal too.Our clocks are the means to calculate it Change is the law of nature so time changes but time exists always Thanks.

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Bok, ljudi, zove se Dragan i zivim u Pragu ... Cesi su se uhvatili posla kao malo pioniri i druze se po gostinicama pricajuci o novoj buducoj svemirskoj drzavi ... sa Slovacima su napravili FB stranicu i sl. Mislim bolje da pricaju o ovome nego o par kvadrata na Dunavu :) Sve u svemu vidim tesku konfuziju, osim gluposti kako vase racunalo moze pomoci trazenu asteroida i biti privremeno mjesto smjestanja necijih malwara tak do sada jos nista konkretno. Bojim se kako nista nece ni biti jer je ovo skup hobi a poletjeti negdje je moguce tek uz veliku investiciju. Ali dobro, za sada neka se kotrlja, vidjet ce mo. Nebi bilo lose dati neke ideje organizirano jer bi time svoju grupu mogli podici na neki konstruktivan nivo. Sad, bilo bi dobro dati neke ideje, sumirati to nekako, predloziti ... nismo u EU da moramo cekati instrukcije od nekakvog Luxemburga, zar ne? :)