Re: Calling Isaac Newton...
You've basicly pointed out the answer to the deceleration problem yourself.
"The problem is that the closer you get to another star the more pressure it exerts on your sail in the wrong direction. "
So, at a certain point, stop putting energy into the spacecraft with the laser, and use the sail to start slowing down by using the pressure of the destination starsystem.
Biting the hand that feeds IT
