What is a Planet?

By WatchKnowLearnFrom YoutubeJanuary 2, 2026

What is a planet? This question has been pondered by many since the early Greeks came up with the word "planetes."

#Planet

#Celestial

#Body

#Orbit

#Star

#Sun

#Round

#Shape

#Gravity

#Mass

#Dominant

#Zone

#Clear

#Definition

#Classification

#Criteria

#IAU

#Astronomy

#Astrophysics