| The official scientific definition of "one second" is the duration of 9,192,631,770 periods of radiation that occurs between two Caesium-133 atoms in a ground, hyper-fine state. |
| A cosmic year is the amount of time it takes the Sun to revolve around the center of the Milky Way, about 225 million years. |
| According to international definition, fog occurs when visibility is 600 feet (200m) or less. |
| The wick of a trick candle has small amounts of magnesium in them. When you light the candle, you are also lighting the magnesium. When someone tries to blow out the flame, the magnesium inside the wick continues to burn and, in just a split second (or two or three), relights the wick. |
| The metal 'Cesium' will melt in your hand and catch fire due to the temperature of your skin. |
| Plaster of Paris is naturally fire retardant. At about 600 degrees Farenheit the chemical water that is stored in it is released. This is also why walls are often "sweaty" after a fire. |
| Brazil nut effect, a law of physics, dictates that when a mixture of granular material is shaken the biggest particles end up on the top. |
| The chemical pectin, found in ripe fruit, causes jam to set when cooling. |
| Our entire local group of galaxies is moving at about one million miles per hour toward another galaxy group called the Virgo Cluster. |
| The interior of Venus is composed of a central iron core and a molten rocky mantle, similar to the composition of Earth. |