Most dust particles in your house come from dead skin.
48
It takes a photon 170,000 years to travel from the core of the Sun to the surface, but only 8 minutes to travel the rest of the way to Earth.
6
The sun is 330,330 times larger than the earth.
75
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
Sound travels about 4 times faster in water than in air.
408
For every gallon of sea water, you get more than a quarter pound of salt.
45
According to studies, men change their minds two to three times more often than women.
72
