A day on Mercury lasts longer than a year on Mercury.
Fact #102
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The Great Attractor is a gravitational anomaly influencing the motion of galaxies.
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There are rogue planets drifting through space with no star at all.
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Some galaxies contain supermassive black holes millions of times the Sun’s mass.
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The Moon's surface is covered with regolith, a layer of loose rock and dust.
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There are planets made of diamond.
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In 1977, a strong narrowband radio signal known as the 'Wow! signal' was detected from space.
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The Moon slowly moves away from Earth by a few centimeters each year.
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The surface of Venus is hidden beneath thick clouds.
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