The First Satellite Discovered in Orbit About Pluto Was Charon

question 34

Multiple Choice

The first satellite discovered in orbit about Pluto was Charon. What is unusual about this moon?

• A) Charon is the only moon in the solar system known to have an atmosphere.
• B) Charon is much warmer than it should be, given its position in the solar system.
• C) Compared with planet-satellite systems in the rest of the solar system, Charon is very large and very close to Pluto.
• D) Charon is geologically active.