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.
For comparison, Voyager 1 is almost 24.8 billion km away from Earth right now and has been traveling since 1977 (near on 50 years).
Haven’t read the article yet, but if the headline is anything to go by, very cool if it can be done.
Why even publish that? You’re not going to get better performance than the already unproven existing nuclear-electric systems any time soon.