Some galaxies are trillions of miles wide.
Fact #1713
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The Earth's magnetic field helps prevent atmospheric loss.
Fact #169 · Space
The Moon is slowly moving away from Earth.
Fact #1691 · Space
Some galaxies appear distorted due to gravitational effects.
Fact #1629 · Space
The Kuiper Belt contains many icy bodies beyond Neptune.
Fact #1619 · Space
The Earth's magnetic poles slowly shift over time.
Fact #212 · Space
Black holes can slow time so much that seconds near them equal years far away.
Fact #1902 · Space
The universe is expanding faster.
Fact #1708 · Space
The Earth's orbit around the Sun is slightly elliptical.
Fact #199 · Space
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