The Milky Way's supermassive black hole, Sagittarius A*, has a mass 4 million times that of the Sun.
Fact #4580
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Venus rotates in the opposite direction of most planets in our solar system.
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The International Space Station orbits Earth roughly every 90 minutes.
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The International Space Station travels at about 28,000 kilometers per hour.
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Black holes can slow time so much that seconds near them equal years far away.
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Light from distant galaxies shows us the past.
Fact #1682 · Space
The International Space Station is one of the most complex engineering projects ever built.
Fact #1510 · Space
Venus has a thick atmosphere that traps heat.
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The observable universe is about 93 billion light‑years wide.
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