Researchers have proposed a new propulsion method that could ... so to get a given amount of energy from a beam, you either need very high power or you need to stay in the beam a long time." ...

Achieving practical interstellar travel requires overcoming the immense challenge of reaching extraordinary velocities. To send a spacecraft, weighing roughly 1,000 kilograms, to a neighboring star ...

Sunbeam’s calculations show it could propel probes up to 1,000 AU from Earth, far outlasting traditional laser propulsion methods. A 1,000 kg probe powered ... such a beam requires up to 19 ...