> I think a lot of people assume that this means you couldn't go more than a few (~100) light-years in your lifetime... But this is not actually correct
It his, it just depends on the observer.
An external, stationary observer will never see you go further than 100 light years, but yourself? Assuming you are able to make your ship go any arbitrary speed approaching c, you could be traveling billions of light years.
It's just that when you stop (if you manage to stop), the universe around you will have aged billions of years, while you will only be a few years older.
It his, it just depends on the observer.
An external, stationary observer will never see you go further than 100 light years, but yourself? Assuming you are able to make your ship go any arbitrary speed approaching c, you could be traveling billions of light years.
It's just that when you stop (if you manage to stop), the universe around you will have aged billions of years, while you will only be a few years older.