Saturn's rings are made primarily of ice particles and rocky debris.
Fact #17
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The Earth's atmosphere gradually thins into outer space.
Fact #163 · Space
The Earth's gravity keeps the atmosphere in place.
Fact #204 · Space
Some galaxies appear distorted due to gravitational effects.
Fact #1629 · Space
The telescope expanded understanding of the universe.
Fact #1553 · Space
The Sun accounts for more than 99% of the mass of our solar system.
Fact #40 · Space
The Earth is not perfectly round.
Fact #1719 · Space
Neptune is the farthest known major planet from the Sun.
Fact #300 · Space
The Hubble Space Telescope revolutionized deep-space imaging.
Fact #1029 · Space
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