A scientist publishes a paper that states that changes in the levels of gases in the atmosphere of a moon of Saturn indicate that there may be extraterrestrial life on that moon. Which statement correctly answers whether the question of alien life on this moon is scientific?
Answer
A
The question is not scientific because it cannot be tested.
B
The question is scientific because it deals with astronomy.
C
The question is not scientific because it involves alien, extraterrestrial life.
D
The question is scientific because it is testable and verifiable.