Read the ten ways here.
Sadly most of them don’t bring us close to the speed of light so are pretty much useless for what we want. The two that do are basically just theories pulled from SciFi movies although the basis is sound science it is all theoretical science and nowhere near working computer models never mind a working prototype.
Looks like we will still be stuck on earth for a bit longer. 
10 ways to traverse deep space
Read the ten ways here.
Sadly most of them don’t bring us close to the speed of light so are pretty much useless for what we want. The two that do are basically just theories pulled from SciFi movies although the basis is sound science it is all theoretical science and nowhere near working computer models never mind a working prototype.
Looks like we will still be stuck on earth for a bit longer.