A thimbleful of a neutron star would weigh over 6 billion tons.
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The observable universe is about 93 billion light‑years wide.
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The light you see from some stars today began traveling before humans existed.
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Project Mercury was the first U.S. human spaceflight program.
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The Fermi Paradox questions why extraterrestrial life has not been observed.
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Saturn's rings are made primarily of ice particles and rocky debris.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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