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So, finally we have confirmation of the existence of gravitational waves – ripples in the fabric of spacetime – and, with that, the first light of the dawn of intergalactic travel, and the slim (very slim) possibility of time travel. Imagine the possibilities: reliving past joys, correcting past mistakes and boldly coming back with those putdown lines that only ever seem to come to us after the event. In time, maybe a very long time, our descendants will demand to return to such pivotal moments. Read More