Interstellar Travel: Physics, Propulsion Trade-Offs, and Feasibility — Kai James, Georgia Tech
To the point
Kai James of Georgia Tech explains that although physics doesn’t forbid interstellar travel, practical constraints like enormous fuel and mass, the need for heavy shielding, and the challenges of decelerating after a long voyage with propulsion options such as beamed propulsion, rockets, chemical, antimatter, and fusion make a feasible trip to another star extraordinarily unlikely.
