For as long as mankind has known of planets beyond our own, they have dreamed of travelling to them and expanding into the Solar system. And a recent proposal from a team at McGill University might have just made that dream a little more plausible.

The biggest obstacle to planetary exploration and colonization is the technological limitations on the speed of our spacecraft. When humans went to the moon half a century ago, it required astronauts to live in a small capsule for the better part of...
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