Some supernova explosions release more energy in a few seconds than the Sun will produce in its entire lifetime.
Fact #2484
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The light you see from some stars today began traveling before humans existed.
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The Moon has no liquid water on its surface today.
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Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
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The Oort Cloud is a theoretical shell of icy objects surrounding the solar system.
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The observable universe is about 93 billion light‑years wide.
Fact #1870 · Space
The Earth's orbit around the Sun is slightly elliptical.
Fact #199 · Space
The observable universe spans billions of light-years.
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The Voyager Golden Record was sent into space containing sounds and images from Earth.
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