What Process Heated the Early Solar Nebula as It Slowly

question 79

Multiple Choice

What process heated the early solar nebula as it slowly condensed toward a central protosun?

• A) the radioactive decay of heavy elements originally formed in the Big Bang
• B) the release of heat as molecules formed and gases condensed into ices
• C) thermonuclear fusion in the protosun, followed by radiative heating of the nebula
• D) the release of heat by collisions of particles as they gained kinetic energy in falling toward the center of the nebula

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