Do you believe in time travel?

How could it be possible?

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helenS · 36-40, F

There is no such thing as a time machine.
You could travel into the far future by travelling at a speed close to the speed of light.

SW-User

@helenS or juuust avoiding an event horizon

saher090 · 31-35, M

what is event horizon?

SW-User

@saher090 It's the distance from a black hole where light can't escape anymore and there's no way out. Time travels more and more slowly nearing it, which means from your perspective the rest of the universe happens more quickly. The closer you cut it to the event horizon, the more extreme this effect is.

helenS · 36-40, F

@saher090 It's also the largest distance from which light emitted [u]now[/u] can [u]ever[/u] reach an observer in the future.

saher090 · 31-35, M

@helenS @SW-User Thank you for the clarification, it is obvious now!