Everything in the Universe is moving. Nothing is at rest. Everything is in motion, and everything is changing. Humans’ perception of this motion is commonly called “time.”
Time is a subjective perception of the movement of objects. Time is the measurement of this motion. There is no objective reality called time existing outside of human perception. Consequently, there is no way to “travel” in time.
Red Badger points out something very important when discussing “time travel”: if it were possible to travel in time, (it isn’t), you would likely arrive in a place between the planets, with no air to breathe because the planets, the Sun, the solar system and the galaxy are all in motion. In addition, you and a few million hydrogen atoms would attempt to occupy the same place, and you would be the source of a nuclear blast seen throughout the Universe.
Humans are part of the cause-effect chain, and cannot step out of it in any way, at any time, in any manner. That’s a first principle, which doesn’t have to be proved, and which therefore would be rejected by all scientists.
Well, now we know what causes 'quasars'..........Somebody in some civilization somewhere just invented a Time Machine..............
Most common sense time travel post I have ever read.
The Greek philosopher Heraclitus pointed this out 2600 years ago and argued that there is no "being" only "becoming"
Uh, no. While the results would certainly be personally disastrous, "a few million hydrogen atoms" are not enough to cause a blast seen throughout the Universe, regardless of what those atoms interact with and how they do it.
Even if one were to convert a human body (that's roughly 7x10e27 atoms for a 70 kg [154 lb] human, or seven billion billion billion atoms, about 2/3 of them hydrogen) entirely to energy, that's still a small blast on the scale of the Universe.