Saturn could float in water because its density is low.
Fact #108
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The Voyager probes have traveled beyond the heliosphere.
Fact #1028 · Space
Dark energy is thought to drive the accelerating expansion of the universe.
Fact #1595 · Space
The Moon always shows the same face to Earth.
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The Earth's magnetic poles slowly shift over time.
Fact #212 · Space
Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
Fact #1787 · Space
The Wow! signal was a strong radio signal detected in 1977 that has never been fully explained.
Fact #1593 · Space
The Pioneer 10 spacecraft was the first to travel through the asteroid belt.
Fact #1023 · Space
The observable universe is about 93 billion light‑years wide.
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