The Milky Way is estimated to be over 100,000 light-years wide.
Fact #177
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The Moon has no breathable atmosphere.
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Black holes have gravitational pulls so strong that not even light can escape.
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Some galaxies are trillions of miles wide.
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The Moon's gravity affects ocean tides.
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The Milky Way is estimated to contain hundreds of billions of stars.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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Cosmic rays constantly bombard Earth from space.
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The Earth is not perfectly round.
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