The Basic Idea Behind the Planetesimal Hypothesis Is That

question 14

Multiple Choice

The basic idea behind the planetesimal hypothesis is that

• A)planets form as a direct result of the nuclear fusion of nebular gases and planetesimals.
• B)small grains of cosmic dust and other solids gradual accrete to form planetesimals that may grow to become protoplanets and eventually planets.
• C)planets form from the remains of super-giant planetesimals that undergo nuclear fission and blow apart,thereby creating smaller objects the planets.
• D)early in the solar systemʹs history,a star passed near to the Sun and pulled off gases that eventually condensed to form planets.

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