The best options for flying to faraway stars

[![A warp drive works by creating folds in the underlying fabric of spacetime, as shown in this artistic concept created by Alexandre Szames. The concept is based on theories proposed by physicist Richard Obousy.][1]][2]Experts say it’ll take at least 200 years to build up the technology and the energy to travel to other stars, but some researchers are already trying to find ways to shorten that time frame. Commentary by Tau Zero Foundation’s Marc Millis.

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