5 Myths that we believed, but here's the facts..

1. There is no gravity in outer space

* In fact, there is gravity in space - very much. The reason that the astronauts did not seem there is a burden because they orbit the Earth. They fell to Earth, but moving sideways to avoid it. So, they are always falling but never landed. Gravity does exist in virtually all space (present but can be felt). When a space shuttle to reach orbit altitude (about 250 miles above Earth's surface), gravity is only decreased by 10%.

2. Lightning never grabbed the same place twice

* In fact, next time you see lightning and you think to run to the place of strike to protect ourselves from further attack, remember this! Thunderstorms are grabbing the same place twice - in fact, is very common. Lightning prefer certain places such as tall trees or buildings. In the large field, the highest object has most likely struck by lightning several times to move away to find new targets. Empire State Building hit by lightning 25 times a year.




3. A coin is dropped from a very tall building could kill pedestrians below

* In fact, this myth is very common that a cliche in several films. Myth is that if you drop a coin from the top of tall buildings (like the Empire State Building) - This coin will get a speed that can kill a person if the man landed on the ground. But the fact is, the aerodynamics of a coin is not enough to make it dangerous. What will happen is people affected by the coin is just feel knock his head - of course they survived the "disaster" is.

4. Brain cells can not regenerate

* In fact, the reason is becoming increasingly common myth is that this myth is believed and taught by the scientific community in the long term. But in 1998, scientists in Sweden and the Salk Institute in La Jolla, California found that human brain cells can regenerate. Previous long believed that the brain is complex can be disrupted by the growth of new cells, but studies have found that memory and learning centers of the brain can create new cells - gives hope to cure diseases like Alzheimer's.

5. Polaris is the brightest star in the northern hemisphere night sky

* In fact, Sirius is actually much brighter with a magnitude of -1.47 when compared with Polaris is 1.97 (the lower the number, the more bright stars). The importance of Polaris is that the North signifies its position in the sky - and therefore also this star dubbed "North Star". Polaris is the brightest star in the constellation Ursa Minor and is the North Star at this time when the pole star changes over time because the stars show the slow movement of continuity to the axis of the Earth.