Happy birthday, Pluto

Wednesday, February 19, 2020 - 5:07pm

2020_0219_05.mp3

Ninety years ago this week, astronomers proudly announced the discovery of a new planet, Pluto. But in 2006, Pluto was shunned from its planetary brethren, a demotion from planet status that was met with outrage and disappointment. Whatever Pluto is, the BBC's Rebecca Wood is celebrating the 90th anniversary of its discovery.