The Planet HAT- P- 32b Has More Than Twice the Radius

question 55

Multiple Choice

The planet HAT- P- 32b has more than twice the radius of Jupiter, yet is only the same mass. It orbits its star more than a factor of ten closer than Mercury's orbit around the Sun. Which is the most plausible explanation for its large size?

• A)The hydrogen and helium gas compressed under their own gravity.
• B)The mass measurement is mistaken, and it is actually about 10 times more massive than Jupiter.
• C)It is made of elements other than hydrogen and helium which do not compress under their own gravity.
• D)Planets that are close to a star are heated up and therefore larger.

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Definitions:

Connectives

Logical operators in a language that link propositions together to form compound propositions, such as "and," "or," "if...then."

Main Connective

In logic, the operator that determines the overall value of a compound statement.

Symbolic Notation

Symbolic notation is the use of symbols and abbreviations to represent objects, operations, relations, and concepts, especially in mathematics and logic.

Atomic Statements

The simplest type of statements in logic that cannot be broken down into smaller components while retaining meaning.