The Curiosity rover plays Happy Birthday to itself every year on the anniversary of its Mars landing using its soil sampling mechanism.
Fact #11345
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Some stars appear to dim irregularly for reasons that are still studied.
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The observable universe is about 93 billion light‑years wide.
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The universe has no center.
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Black holes can slow time so much that seconds near them equal years far away.
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Black holes can slow time so much that seconds near them equal years far away.
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The Moon was likely formed after a massive collision with early Earth.
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Sea stars can regenerate lost arms.
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Dark matter is believed to make up most of the universe’s mass but has not been directly observed.
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