Astronauts on the ISS witness about 16 sunrises and sunsets every day.
Fact #10374
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More Space Facts
The Bell Labs experiment led to the discovery of the cosmic microwave background.
Fact #1021 · Space
Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
Fact #1735 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1789 · Space
There are planets made of diamond.
Fact #1688 · Space
Mercury has extreme temperature differences.
Fact #147 · Space
Comets orbit the Sun in elongated paths.
Fact #75 · Space
Asteroids vary widely in size and composition.
Fact #1631 · Space
Space is completely silent.
Fact #1689 · Space
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