Parade’s science editor David H. Levy had discovered or codiscovered 21 planets, including Comet Shoemaker-levy 9, which made headlines when it crashed into Jupiter in 1994. Levy wondered if the NASA spacecraft New Horizons, about to begin a voyage to the edge of the solar system, might Hnd new planets. New Horizons, which is still out there, captured photos of Pluto in 2015 as it hew by.