Here's some further calculations for a 1G space ship: https://math.ucr.edu/home/baez/physics/Relativity/SR/Rocket/rocket.html https://math.ucr.edu/home/baez/phy

Here's some further calculations for a 1G space ship: https://math.ucr.edu/home/baez/physics/Relativity/SR/Rocket/rocket.html https://math.ucr.edu/home/baez/physics/Relativity/SR/Rocket/.... 3.6 years to Proxima Centauri if you want to stop.