[KarlInOhio]

If you do the math, going at the speed of the Pluto probe, 54,726 years

Which is only about 5 times the length of human civilization from its beginning in the fertile crescent.

[PIF]

“... human civilization from its beginning in the fertile crescent.”

Except that recent finds predate that era by many thousands of years while hinting at still far older origins. “Mankind, the species with amnesia” - Graham Hancock

[Alas Babylon!]

Dr. Freeman Dyson proposed the Super Orion Project back in the late 1950's. This is a very large spacecraft propelled by nuclear explosions directly behind it. In any case, for deploying a proper heat sink in the back that could withstand the nuclear bombs exploding behind it, the space ship has to be huge.

It also could reach speeds of 10,000 km/s, which would get it to Alpha Centauri in 133 Earth years. With time dilation on the craft itself that would be whittle down to about 6 years, one way.

Project Orion (nuclear propulsion)

And using a huge light sail instead, powered by a 100 megawatt laser, such as with the Breakthrough Starshot, could reach speeds of 100-million-mile-per-hour. This would reach Alpha Centauri in 20 years.

Breaktrough Starshot