"Chemical rockets that we use today, even with the extra speed boost from flying by planets, or from swinging by the sun for ...

Knowledge of a laser beam's shape and output-power distribution is critical for ... shape of their laser beams and how the intensity of light varies across them. The tool that makes this possible ...

Calculations in the paper show that such a beam could provide power out to 100 or even 1,000 ... could be moving as fast as 10% of the speed of light—allowing it to reach Alpha Centauri in ...