Comets are made of ice, dust, and rocky material.
Fact #33
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Light from distant galaxies shows us the past.
Fact #1682 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1754 · Space
Fast radio bursts are powerful millisecond-long radio pulses from distant galaxies.
Fact #1592 · Space
The Milky Way is just one of billions of galaxies in the universe.
Fact #78 · Space
The Moon always shows the same face to Earth.
Fact #134 · Space
Exoplanets have been discovered in habitable zones around distant stars.
Fact #1625 · Space
Some exoplanets orbit two stars at once.
Fact #1615 · Space
A day on Venus is longer than its year.
Fact #1684 · Space
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