Sending an object to another star is still the stuff of science fiction. But some concrete missions could get us at least part way there. These “interstellar precursor missions” include a trip to the Solar Gravitational Lens point at 550 AU from the Sun – farther than any artificial object has ever been, including Voyager. …



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Source: Ion Engines Could Take Us to the Solar Gravitational Lens in Less Than 13 Years