There are galaxies billions of years older than Earth.
Fact #2277
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The universe is expanding faster.
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The Sun accounts for more than 99% of the mass of our solar system.
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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 Earth's magnetic field protects against solar radiation.
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Venus has the longest day of any planet in the solar system.
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Comets are made of ice, dust, and rocky material.
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The Earth's magnetic north pole moves over time.
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The observable universe is about 93 billion light‑years wide.
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