Nineteen Years Later, the Pluto Resistance Continues

Nineteen years. That is how much time has passed since the controversial IAU vote in 2006. Planetary science has been in a long-term stalemate over the issue of planet definition. The IAU refuses to re-open the debate based on new information, including that returned by New Horizons. At the same time, a large number of planetary scientists are using the geophysical planet definition and ignoring…