Got 20 spare years?

[glatt]

Originally Posted by Happy Monkey

At 20 ly, if we had a ship with 1G accelleration, it would take about 6 years from the perspective of the crew to land there. Over 90 years from the perspective of Earth. And, of course, another 20 for them to let us know how the landing went.

Is that 1G of constant acceleration all the way there, or 1G of acceleration until you get to the midpoint and then turn the ship around and do 1G of deceleration to come to a stop?

If it's constant acceleration the whole time, then how hard is it to stop? Can you just toss an anchor out the window as you shoot by the planet?