The surface of Venus is hidden beneath thick clouds.
Fact #1628
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The Pioneer 10 spacecraft was the first to travel through the asteroid belt.
Fact #1023 · Space
Black holes can slow time so much that seconds near them equal years far away.
Fact #1940 · Space
Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
Fact #1896 · Space
The Earth's rotation speed varies slightly over time.
Fact #237 · Space
There are rogue planets drifting through space with no star at all.
Fact #1823 · Space
The Moon's gravity affects ocean tides.
Fact #195 · Space
Solar eclipses occur when the Moon blocks the Sun from Earth's view.
Fact #189 · Space
The universe is expanding faster.
Fact #1708 · Space
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