The solar system is much more complicated now, astronomers say, than in 1930 when Clyde Tombaugh added Pluto to the inventory of wandering lights circling the Sun.
pluto has moved closer to the sun
( z1 move :ARG1 ( z2 planet :name ( z3 name :op "Pluto" ) ) :ARG2 ( z4 close :ARG1 z2 :ARG2 ( z5 sun ) :ARG2-of ( z6 have-degree :ARG1 z2 :ARG3 ( z7 more ) ) ) )