The Moon was formed billions of years ago.
Fact #313
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Gamma-ray bursts are among the most energetic events observed in the universe.
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Mercury has extreme temperature differences.
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The Earth's magnetic field shields the planet from solar wind.
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Cosmic rays constantly bombard Earth from space.
Fact #1621 · Space
Cosmic microwave background radiation is evidence of the early universe.
Fact #1608 · Space
The Earth orbits the Sun at about 30 kilometers per second.
Fact #137 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1865 · Space
Neptune is the farthest known major planet from the Sun.
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