Time is not a wave. Its not something that exists. Its an illusion. Its a sequence of events. How the hell can you call it a wave. Light is understandable. It has dual nature particcle and wavelike characteristics. Made up of photons. Time is made up of instances, or sequences of events.

as clever as Cock the Clever Kitty Cat.

Time is just a dimension. The fourth dimension.

just this:) except that light is made out of photons. Scientists still aren't sure what light is. These days they except it as photons(particles) that can behave theirselves as waves. But they know it's probably something else, but they still don't know what. However, I think you meant that:p. Time definitely isn't a wave. The SI for time is seconds.
The second is the duration of 9192631770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the cesium 133 atom at 0 K.
Time is just something that people invented to use in physics. It's something that passes and you can't go back in time. Everything about the light speed thing and aging is true I believe:)

its not possible to travel into the past. No amount of science can change what has already happened.

if it is then it has either happened according to quantum science (ofc we could be wrong) or there are infinite possible universes (more likely).

it's not possible to travel in past and not in future aswell

lol

this

time is dimensional and goes beyond the linear sequence in which we prescribe to it due to our limited perspective or reality.