Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
The earth is approx. 6,588,000,000,000,000,000 tons.
175
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
4.5 pounds of sunlight strike the Earth each day.
27
Scientists are attempting to create a synthetic brain by reverse-engineering the mammalian brain down to the molecular level. A cellular human brain is predicted possible by 2023. It hopes to shed light on consciousness.
10
The only letter not appearing on the Periodic Table is the letter "J".
180
The Manchineel Tree is so poisonous, rainwater dripping off it’s leaves will burn your skin.
17