I’m wondering if interstellar travel is possible. So I guess the starting point is figuring out FTL travel.
In: 1302
To answer your follow on question, interstellar travel is possible.
The nearest star is 4 light years away, so if we could travel at half the speed of light it would take eight years to get there (as viewed from Earth).
With time dilation (see responses from other commenters) the people on the spaceship would experience it as taking even less than 8 years.
The difficulty is creating a spaceship which can go half the speed of light (relative to Earth), because that’s a really fast speed, so would take a lot of energy to get to that speed.
Currently if we sent out a spaceship it would take tens of thousands of years. In that time we could build a faster spaceship which would overtake it, so sending one out now wouldn’t be that beneficial.
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