41% of the moon is not visible from earth at any time.
103
The sun puts out more power in 1 second than mankind has ever used within human existence.
14
The heart of an astronaut actually gets smaller when in outer space.
216
The Earth gets heavier each day by tons, as meteoric dust settles on it.
118
Summer on Uranus lasts for 21 years.
358
There are 5 to 10 times more stars in the known Universe than there are grains of sand on all the world's beaches, but a single grain of sand has more atoms than there are stars in the known Universe.
20
The volume of the Earth's moon is the same as the volume of the Pacific Ocean.
178
There is a mass reservoir of water floating in space that is 100,000 times bigger than our sun and holds 140 trillion times more water than all of our oceans.
11