But later, when similar more small objects were discovered, the International Astronomical Union (IAU) in 2006 redefined the requirements of an object to be called a __________.
planet
○ indicate
○ pollution
○ portion
Show explanation
The textbook states: “But later, when similar more small objects were discovered, the International Astronomical Union (IAU) in 2006 redefined the requirements of an object to be called a planet.” — Examisthan.com