It Is Believed That the Stellar Disk Around the Star

question 18

Multiple Choice

It is believed that the stellar disk around the star Beta Pictoris contains a Jupiter-size planet.What is the reason behind this belief?

• A) The planet was imaged directly by the Hubble Space Telescope.
• B) Effects of the intense magnetic field of this planet can be detected by powerful radio telescopes.
• C) The gravitational effect of this planet has created an off-center disk of dust and gas around the star.
• D) The planet causes a measurable decrease in the brightness of Beta Pictoris when it transits across its disk.

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