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Saturn is predominately composed of hydrogen and helium, yet doesn't undergo fusion like the Sun due to the lacking mass.
The original source of all sand is rocks.
Dark energy is the term to refer to the force that is causing an expansion of the universe to accelerate. It is estimated that the universe is 68.3 percent <span>dark energy, 26.8 percent dark matter, and 4.9 percent ordinary matter.</span>
