On Aug. 24, 2006, the International Astronomical Union voted to strictly define a planet, which ultimately downgraded Pluto from the ninth planet from the sun to a dwarf planet — causing controversy both scientifically and culturally. https://bit.ly/3AjocVo | KOCO 5 News

Neil deGrasse Tyson reads "Mean Tweets About Pluto"... In 2006 Neil was part of the International Astronomical Union panel that downgraded Pluto’s status from “planet" to "dwarf planet". What did the world have to say about it? Watch the live stream of #PlutoFlyBy on our website Tuesday 9.30pm AEST here: http://natgeotv.com.au/tv/mission-pluto/ | National Geographic Australia

Pluto has a thin atmosphere with a blue tint. Find out what else makes the "King of the Kuiper Belt" interesting. Stream "The Planets: Ice Worlds" online or on the @PBS app now: https://to.pbs.org/2YztewN | NOVA l PBS