Time Is Relative

If humans are going to be a space-faring species, an inter-galactic one at that, traveling at near or greater than the speed of light, then one problem we’ll probably have to deal with is time dilation — the difference in the elapsed time as measured by two clocks due to a relative velocity between them.

Time dilation is not only experienced near black holes or when traveling through wormholes, it sure does happen on Earth too. At even lesser than light years(9.5 trillion km), time dilation is experienced across the earth.

You see, there are two main causes of time dilation ; relative velocity and difference in gravitational potential. And since high altitudes affect the gravitational field, the result is that the closer you are to a large object like the Earth, the slower time will run. This is evident on planes which travel at very high altitudes because at high altitudes, the weak gravitational field speed up the rate of the tick rate of a clock on board more than on the surface of the Earth where gravitational field is much stronger.

Everything is relative…🖖