Cosmic Origins & Solar System

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Last updated 3:47 AM on 9/28/26
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5 Terms

1
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Creation of Heavy Elements (C, N, Cu, Au)

Created inside stars or when stars exploded (supernovae)[cite: 2].

2
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Star Formation Mechanism

Cold hydrogen condenses under gravity until core compression ignites nuclear fusion[cite: 2].

3
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Formation of the Moon

A Mars-sized ancient planet collided with Earth; ejected material coalesced into the moon[cite: 2].

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Earth's Ocean Water Source

Brought to Earth primarily by comets and icy planetesimals[cite: 2].

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Scaled Ocean Thickness (Beach Ball Scale)

About 0.1 millimeter thick[cite: 2].