Outdated school knowledge

• Outdated school knowledge

In school, we were told the truth. Rather, the facts of a decade ago have changed. School knowledge obsolete, it's time to take form again.

the Polar Star, for example, is not the brightest. In ancient times, it was she who serves as a reference for travelers and even today without a compass and convenient technique to focus on it. But even brighter (up to 25 times stronger than the sun) shines Sirius, because it is located very close to the Earth.

A further lessons to many physicists told that there are only three states of matter - liquid, solid and gaseous. But allow me to state much more. Plasma, liquid crystals, Bose - Einstein condensate. Most of them can be obtained only in the laboratory, but essentially it does not change.

And dinosaurs became extinct is not all. With the cataclysm happened 66 million years ago, dinosaurs coped small, maniraptora. In the process of evolution they have become known to us birds.

We have no idea how many of the planets in our solar system. According to NASA, at least three dwarf planets are recognized in the Kuiper belt. According to some data, the astronomers to discover more about 8 planets and 5 dwarf planets.