Forget the rockets and bring on the photons. Let signals beamed via radio (or light) do the traveling.
Scientists long ago realized that we can’t find aliens by climbing into rockets and zipping off to other planetary systems. Such galactic galivanting is standard fare in movies and on television, a circumstance that has convinced many people that it’s something humans will be doing real soon now. But the enormous distances to the stars (even the nearest is 7,000 times farther than Pluto) means that we simply aren’t about to visit the aliens
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