The back of your hand is called the 'Opisthenar'.
Jellyfish evaporates in the sun because they are of 98% water.
According to NASA, the moon smells like gunpowder.
It's possible to permanently change a brown eyes to blue using a specific type of laser eye surgery.
Any free-moving liquid will form itself into a sphere in outer space because of its surface tension.
Boeing 747's wing span is longer than the Wright brother's first flight. The Wright brother's invented the airplane.
Every year, over one million earthquakes shake the Earth.
The Earth spins at 1,000 mph but it travels through space at an incredible 67,000 mph.
The speed of light is generally rounded down to 186,000 miles per second. In exact terms it is 299,792,458 m/s (equal to 186,287.49 miles per second).
It takes 8 minutes 17 seconds for light to travel from the Sun's surface to the Earth.