Tag Archives: Astronomical

Discuss the current definition of a planet.

1. Forum TOPIC 1: Discuss the current definition of a planet. The resources listed below are good places to start and further research is encouraged. What makes a planet a planet? YouTube link, https://youtu.be/8x06kN4ZMOE, The Verge, December 2016 Explanation of International Astronomical Union: https://www.iau.org/public/themes/pluto/