2019-03-01 11:12:03

“The IAU vote is a muddled compromise that will not settle the question of ‘What is a planet?’ Pluto is not a ‘planet’ according to resolution 1, but it is a ‘dwarf planet’ by resolution 2. So is it a ‘planet’? I thought so before and think so now.” Andrew Cheng of Johns Hopkins University Applied Physics Laboratory (, 29 August) “It’s an awful definition; it’s sloppy science and it would never pass peer review. I have nothing but ridicule for this decision.” Alan Stern, who leads NASA’s New Horizons mission to Pluto (BBC online,