Time moves more slowly in stronger gravitational fields.
Fact #1618
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Black holes can slow time so much that seconds near them equal years far away.
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The observable universe is about 93 billion light‑years wide.
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The Pioneer 10 spacecraft was the first to travel through the asteroid belt.
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There are more stars in the universe than grains of sand on Earth.
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Black holes can slow time so much that seconds near them equal years far away.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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The observable universe is about 93 billion light‑years wide.
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The Moon always shows the same face to Earth.
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