A large amount of information on almost all the space we draw from science fiction movies. This is one of the reasons that our knowledge about it is very imperfect. Remember the common "space" error .

1. Sun - fireball

We have traditionally represents the sun burning ball. However, the fact that the Sun burns - from the most common misconceptions about the cosmos. Burning - a chemical reaction in the sun as the heat produced by nuclear reactions. Our star - a ball of gas that heats through nuclear fusion, when two hydrogen atoms to form helium atoms. Fire on the Sun there.

2. yellow sun

The sun seems to us white only for the reason that we see it through the Earth's atmosphere. After a neutral density filter or cloudy we see Sun as a white disc.
The so-called effective temperature of the sun, that is the temperature on its surface, is approximately 6000 degrees Calvin. That is, it is in the middle between the cold and hot stars. First - dark red color, the second - the blue. The sun in the grading of the spectrum - white.
3. The person in space explodes
Regarding what will happen to a person if he is in space without a spacesuit, "Russian seven" wrote not so long ago.
The most important misconception associated with this situation is that it is believed that the person in space without a spacesuit explode. The man did not explode, because our body is not as elastic as a rubber ball, and not as fragile to split the differential pressure of one atmosphere.
The myth that a person may explode in space, went from a science fiction movie. In fact, even the air in the lungs of people will not be able to contain and "deflate", because of its palate because of the jump in pressure is the pressure of 40 kg.
4. The tail of the comet - the trace of its motion

When we present a comet, we see a piece of ice hurtling through space, beyond which stretches a long tail, which is generated by the rapid motion of the comet.

However, as is well known, there is no space in the friction force, so the tail of the comet can be formed by the movement. Accordingly, the direction of the tail of the comet is not related to its course, and is not associated with the destruction of the body of the comet, and friction. What is the reason?

The tail of the comet is formed by the fact that the solar wind heats the comet, and leads to the melting of ice. The particles of ice and sand fly in the opposite direction of the wind. So the comet can fly anywhere, but its tail is pointing away from the sun.

5. In space there is no gravity

One of the most common misconceptions about space is the idea that in space there is no gravity. Any notion that the cosmonauts and astronauts on space stations "floating" in space, but in fact they are "falling".

Space station is located about 354 kilometers above the Earth, but even there the force of gravity about 93% of the Earth's gravity. The reason why people "fly" on a space station that they actually are in a "free fall". It continued "free fall" astronauts provides them with a sense of flight and weightlessness.