Each of these characteristics is included in the formal definition of a planet EXCEPT
A) orbits a star directly.
B) has enough mass to pull itself into a roughly spherical shape.
C) spins fast enough to produce its own magnetic field.
D) has enough gravity to clear its orbit.

Question

Quizplus · Accepted Answer

The formal definition of a planet, as adopted by the International Astronomical Union (IAU), does not include spinning fast enough to produce its own magnetic field as a criterion. The definition focuses on orbiting a star, being spherical due to its own gravity, and having cleared its orbit of other debris.

Each of These Characteristics Is Included in the Formal Definition