The Sun accounts for more than 99% of the mass of our solar system.
Fact #40
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The observable universe is about 93 billion light‑years wide.
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The International Space Station travels at about 28,000 kilometers per hour.
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Neutron stars can collide and produce heavy elements.
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Mercury has extreme temperature differences.
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Black holes can slow time so much that seconds near them equal years far away.
Fact #1790 · Space
Venus rotates in the opposite direction of most planets in our solar system.
Fact #6 · Space
The Oort Cloud is a theoretical shell of icy objects surrounding the solar system.
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Neutron stars can spin hundreds of times per second.
Fact #1597 · Space
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