A year on Mercury is just 88 Earth days long.
Fact #10049
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Comets can develop long tails when near the Sun.
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The heliosphere protects the solar system from interstellar radiation.
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The Voyager probes have traveled beyond the heliosphere.
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The Moon's gravity affects ocean tides.
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The Pioneer 10 spacecraft was the first to travel through the asteroid belt.
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The Moon was likely formed after a massive collision with early Earth.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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