The largest volcano in the solar system, Olympus Mons on Mars, is 600 km wide at its base.
Fact #4590
👍 0 · 👎 0
More Space Facts
Neutron stars are among the densest objects in the universe.
Fact #47 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1819 · Space
Magnetars have extremely powerful magnetic fields.
Fact #1612 · Space
Comets orbit the Sun in elongated paths.
Fact #75 · Space
The Bell Labs experiment led to the discovery of the cosmic microwave background.
Fact #1021 · Space
Black holes can slow time so much that seconds near them equal years far away.
Fact #1903 · Space
A day on Mercury lasts longer than a year on Mercury.
Fact #102 · Space
There are rogue planets drifting through space with no star at all.
Fact #1823 · Space
Want more facts?
We have over 11,491 facts across 15 categories.