certainly exciting news. But what would it take to visit one of these potentially Earth-like alien worlds? TRAPPIST-1 is 39 light-years away from Earth, or about 229 trillion miles (369 trillion kilometers). It would take 39 years to get there traveling at the speed of light. But no spacecraft ever built can travel anywhere near that fast. That said, people have sent some pretty fast vehicles into outer space. With today's technology, how long would it take to get to TRAPPIST-1? https://www.livescience.com/57993-trappist-1-alien-planets-travel-time.html