If Time Travel existed before the Earth existed:

then understanding that this is true now might save your life several times before the end of your present life.

MIT students were some of the first to posit this theory.

"If time travel is possible to be invented it already exists everywhere in the past, present and future already."

This is a valid theory by the way and the logic flawless.

So, if time travel was invented at any point in the past, present or future in this galaxy or another it is also here right now.

Since it is likely a 99.9% possibility that time travel exists either in reality or in potentiality, time travel is already here right now on earth.

So, it doesn't matter if a human invented it or someone else, the likelihood is that it has been here always for thousands of reasons and years  already is at 99.9%

Because of this imagine yourself leaving today on a Time Space voyage to any planet in our galaxy or another and arriving back after years of travel the next moment after you left here on earth.

This is the future of space travel with time travel.

Imagine making right angel turns at 7000 miles per hour as has been witnessed here on earth many many times since 1947. This is possible with time space displacement in space traveling vehicles too. This is exactly how a human body or other body could actually survive a 7000 mile per hour right angle turn.