"Planet Definitions" by XKCD comic (mirror bots @xkcd @xkcdbot ) - All the definitions of a planet, whether they've earned representation or not. https://xkcd.com/3063/ #astronomy #planetary #asteroid #geology #oops #WTF #humor
"Planet Definitions" by XKCD comic (mirror bots @xkcd @xkcdbot ) - All the definitions of a planet, whether they've earned representation or not. https://xkcd.com/3063/ #astronomy #planetary #asteroid #geology #oops #WTF #humor