@CNN: When the New Horizons mission conducted the closest flyby of Pluto and its moon, Charon, in 2015, it gave a zoomed-in view of ancient impact craters that astronomers say provide greater understanding of mysterious objects on the edge of our solar system https://t.co/m0VOpaFQ1e https://t.co/wtHPZl40tj

@CNN: When the New Horizons mission conducted the closest flyby of Pluto and its moon, Charon, in 2015, it gave a zoomed-in view of ancient impact craters that astronomers say provide greater understanding of mysterious objects on the edge of our solar system https://t.co/m0VOpaFQ1e https://t.co/wtHPZl40tj