The Oort Cloud of Comets Surrounding the Solar System at a Distance

question 52

Multiple Choice

The Oort cloud of comets surrounding the solar system at a distance of about 50,000 AU is believed to be:

• A) material flung outward by the gravity of the newly formed giant planets early in the history of the solar system.
• B) an interstellar cloud through which the Sun and planets happen to be passing but is not otherwise connected to the solar system.
• C) debris left behind at that distance by the collapse of the interstellar cloud that formed the Sun and planets.
• D) material captured from interstellar space by the Sun''s gravity.

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