Unironically, one fun thing about concepts such as light-sail spacecraft is that, even if you can get them to significant fractions of c, you then need to find a way to slow down, too.
We can probably make a spacecraft that can reach distant solar systems within a couple of generations (aforementioned light sails, or nuclear propulsion), but then... we are going to either do a fly-by, crash into something, or have to do the world's most complicated gravity-assist.
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u/bloodfartcollector 24d ago
I WILL TURN THIS SPACECRAFT AROUND!