Mercury has no substantial atmosphere to trap heat.
Fact #249
👍 0 · 👎 0
More Space Facts
Neutron stars are so dense that a single teaspoon would weigh billions of tons on Earth.
Fact #1896 · Space
Jupiter has a magnetic field stronger than Earth's.
Fact #173 · Space
There are rogue planets drifting through space with no star at all.
Fact #1731 · Space
The Earth spins at 1000 mph.
Fact #1704 · Space
The Earth's gravity keeps the atmosphere in place.
Fact #204 · Space
The observable universe is about 93 billion light‑years wide.
Fact #1841 · Space
Saturn's rings are made primarily of ice particles and rocky debris.
Fact #17 · Space
The Sun accounts for more than 99% of the mass of our solar system.
Fact #40 · Space
Want more facts?
We have over 11,491 facts across 15 categories.