The Milky Way and Andromeda galaxies are on a slow collision course.
Fact #1613
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The observable universe spans billions of light-years.
Fact #1611 · Space
The Earth's rotation speed varies slightly over time.
Fact #237 · Space
The Earth's gravity affects the movement of tides.
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Some stars collapse into black holes at the end of their life cycle.
Fact #1624 · Space
Space is completely silent.
Fact #1689 · Space
Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
Fact #1787 · Space
Mercury has extreme temperature differences.
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A day on Venus is longer than its year.
Fact #1684 · Space
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