Which of These Time Sequences for the Formation of the Solar

question 12

Multiple Choice

Which of these time sequences for the formation of the solar system is MOST probable?

• A) The Sun contracted first as a gas ball, and the planets and moons formed shortly afterward by accretion and condensation.
• B) The Sun formed first, the planets were spun off from the Sun, and the moons in turn were spun off from the planets.
• C) The planets formed first out of a cold nebula of gas and dust, followed by the Sun, which formed when the gas had become much hotter.
• D) The Sun formed initially, and the planets and major moons were captured much later as they drifted by the Sun.

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