Can I time travel back to the past?

Can I time travel back to the past?

General relativity. Time travel to the past is theoretically possible in certain general relativity spacetime geometries that permit traveling faster than the speed of light, such as cosmic strings, traversable wormholes, and Alcubierre drives.

What happens if you leave Earth at the speed of light?

Answer: Firstly, the physical consequence of traveling at the speed of light is that your mass becomes infinite and you slow down. According to relativity, the faster you move, the more mass you have. The same works on Earth when you’re driving down the freeway.

What is the number one rule of time travel?

1. Traveling into the future is easy. We travel into the future all the time, at a fixed rate: one second per second. Stick around, you’ll be in the future soon enough.

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What would happen if you time travel for 82 years?

But back on Earth, 82 years would have passed. Everyone you know would have aged tremendously. This is the standard way time travel physically works: it takes you into the future, with the amount of travel forward in time dependent only on your motion through space.

What happens when a traveler goes back in time?

By going back in time, the traveler creates a new reality and would, therefore, never be able to return to the reality they once knew. (If they then tried to travel into the future from there, they would see the future of the new reality, not the one they knew before.)

Is it possible to travel into the past in real life?

Traveling Into the Past. It turns out that people time travel all the time, but only in one direction: from the past to the present and moving into the future. Unfortunately, no one has any control over how quickly that time passes and nobody can stop time and continue to live. It seems that time is a one-way street, always moving forward.

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Can a time traveler prevent someone from being born?

An entire episode of Star Trek was built around that idea. It turns out that the time traveler effectively creates an alternate reality or parallel universe. So, if someone did travel back and prevent someone else’s birth, or murdered someone, a younger version of the victim would never come to be in that reality.