Multiple choice

A _____ is an object that orbits a star, has a round shape, and does not have a debris field.

  1. planet

  2. dwarf planet

  3. comet

  4. moon
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The IAU definition of a planet requires that the object orbits a star, has sufficient mass for a round shape, and has cleared its orbital neighborhood of other debris.

Keep practicing — related questions