The observable universe is approximately 93 billion light-years in diameter.
Fact #6543
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The observable universe is about 93 billion light‑years wide.
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The International Space Station orbits Earth every 90 minutes.
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The Milky Way is just one of billions of galaxies in the universe.
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Cosmic rays constantly bombard Earth from space.
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Project Mercury was the first U.S. human spaceflight program.
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The Earth orbits the Sun once every year.
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A day on Venus is longer than its year.
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The Voyager probes have traveled beyond the heliosphere.
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