The Moon has no liquid water on its surface today.
Fact #324
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The Earth's orbit around the Sun is slightly elliptical.
Fact #199 · Space
The Moon was formed billions of years ago.
Fact #313 · Space
The Wow! signal was a strong radio signal detected in 1977 that has never been fully explained.
Fact #1593 · Space
The Hubble Space Telescope has captured deep images of distant galaxies.
Fact #61 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1865 · Space
The event horizon marks the boundary around a black hole.
Fact #1616 · Space
Saturn's rings are made primarily of ice particles and rocky debris.
Fact #17 · Space
The Milky Way contains regions of active star formation.
Fact #219 · Space
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