A newly formed planet or large asteroid becomes molten due to
A) the last infalling objects.
B) decay of radioactive element isotopes.
C) both of the above.
D) none of the above. Newly formed planets remain solid inside.

Question

Quizplus · Accepted Answer

Both infalling objects and the decay of radioactive element isotopes can generate enough heat to cause a newly formed planet or large asteroid to become molten. This is due to the potential energy released during the infalling process or the heat generated by radioactive decay. As a result, both factors could play a role in the formation of a molten planet or asteroid.

A Newly Formed Planet or Large Asteroid Becomes Molten Due