29.5.20
WALT: take note's quickly
in 1930 Clyde Tombough found Pluto then in 2006 the IAU changed the meaning of a planet.
1. A planet had to be round
2.It had to orbit the sun
but Pluto didn't
3.It also had to clear its orbit.
So Pluto is not classified as a planet now it is a dwarf planet.