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Solar System Formation. This is a nebula. This is where stars are forming. These are little solar nebulae!. Proto-sun and accretion disk. Accretion. Dus grains stick together through electricity to form planetessimals.
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This is a nebula. This is where stars are forming.
Accretion • Dus grains stick together through electricity to form planetessimals. • Collisions between planetessimals melt the surface which acts as a “glue” causing them to grow larger. • Largest planetessimals pull in material through gravity and become proto-planets.
Gravity causes…. • The nebula to contract • The center heats up (from pressure) • Rotation causes… • The nebula to flatten out.