Twenty years after demotion, astronomers still clash over Pluto's planet status
Two decades after the International Astronomical Union voted in 2006 to reclassify Pluto as a dwarf planet, a vocal group of scientists, historians and enthusiasts continue to push back against that decision. Critics like Philip Metzger of the University of Central Florida argue the IAU's planetary definition is scientifically unworkable, while others such as writer Laurel Kornfeld have campaigned against the ruling since the day it was announced. The dispute remains largely an American phenomenon, tied partly to national pride since Pluto was discovered by a US astronomer in 1930.