What Is Interesting About the Orbit of the Binary Pulsar,PSR

question 5

Multiple Choice

What is interesting about the orbit of the binary pulsar,PSR 1936+16,studied by Taylor and Hulse?

• A)It is so small that the orbital period is smaller than the pulsar period.
• B)It is growing smaller, presumably by emitting gravitational waves.
• C)It provides evidence that it is being orbited by at least 6 planets the size of Jupiter.
• D)It shows large changes each time an X-ray burst is emitted from the system.

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