The Basic Idea Behind the Planetesimal Hypothesis Is That

question 57

Multiple Choice

The basic idea behind the planetesimal hypothesis is that

• A)small grains of cosmic dust and other solids gradual accrete to form planetesimals that may grow to become protoplanets and eventually planets.
• B)cosmic debris from the Big Bang coalesced to form planets as they neared the gravitational pull of the Sun.
• C)planets form as a direct result of the nuclear fusion of nebular gases.
• D)early in the Solar System's history,a star passed near the Sun and pulled off gases that eventually condensed to form planets.
• E)planets form from the remains of super-giant planetesimals that blow apart,thereby creating smaller objects-the planets.

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