The cosmic microwave background radiation is the afterglow of the Big Bang and can be detected in every direction in space.
Fact #10357
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Solar eclipses occur when the Moon blocks the Sun from Earth's view.
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The light you see from some stars today began traveling before humans existed.
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Time moves slower in stronger gravitational fields.
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Time moves slower in stronger gravitational fields.
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Comets orbit the Sun in elongated paths.
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There are rogue planets drifting through space with no star at all.
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The light you see from some stars today began traveling before humans existed.
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In 1859, a powerful solar storm disrupted telegraph systems across the world.
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