The Sun accounts for about 99.86% of all the mass in the solar system.
Fact #2493
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The Earth's rotation speed varies slightly over time.
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The observable universe is about 93 billion light‑years wide.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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The Voyager 1 spacecraft is the farthest human-made object from Earth and still communicates with us.
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The Milky Way is estimated to be over 100,000 light-years wide.
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The Earth's rotation causes day and night cycles.
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There are rogue planets drifting through space with no star at all.
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The Pioneer 10 spacecraft was the first to travel through the asteroid belt.
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