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#Professor Dame Jocelyn Bell Burnell

# professor-dame-jocelyn-bell-burnell - Friday 17 January, 2014

Column: Why is Pluto not a planet?
# Stargazer
# Stargazer

Column: Why is Pluto not a planet?

Jan 17th 2014, 12:55 PM 798 Views 38 Comments

Most of us grew up learning that there were nine planets in the Solar System. But why did Pluto get demoted? Conor Farrell explains how our understanding of the icy body changed.