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
At room temperature, the average air molecule travels at the speed of a rifle bullet.
55
The use of emoticons affects our corresponding brain areas and can actually trigger emotions.
21
In zero gravity, a candle's flame is round and blue.
16
Your brain is 80% water.
525
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Oak trees produce 2,200 acorns in a season, but each acorn only has a 1 in 10,000 chance of becoming an oak tree.
304
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39