Such a grand mission would need to overcome many enormous challenges, the first and perhaps most obvious being distance. Not including the sun, the closest known star to Earth (Proxima Centauri) is 4.24 light-years, or roughly 25 trillion miles, away. Although 4.24 light-years is a mere hop on the cosmic scale, it would take quite some time to get there with our current technology.
The Parker solar probe, launched by NASA in 2018, is the fastest-moving object ever made by humans, clocking in at 430,000 miles per hour. But even at this speed, it would take 6,617 years to reach Proxima Centauri. Or, put another way, it would take roughly 220 human generations to make the trip.
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