Space

Despite the level of civilization, humanity still knows very little about the world around us. Nevertheless, some of the facts of what we know, amazing and unpredictable. Below are 10 of the most interesting facts about the surrounding space.

1. Ease
If you omit the Saturn in the water, it will float on the surface. The average density of Saturn is almost 2 times less than the density of water. If you can find an appropriate glass (diameter not less than 60 000 km), you will be able to check it

2. Constant movement.
All of us - the people, houses, mountains and rivers - constantly moving through space at the speed of 530 kilometers per second. Within our galaxy we are moving at a speed of 225 km / sec, and the galaxy itself hurtling through space at the speed of 305 km / sec. So, while you're reading this sentence, you suffered Earth at a distance of 3000 kilometers.

3. Goodbye, old friend ...
The moon is moving away from the Earth. Each year, the Moon is moving away from Earth at a range of about 4 cm. The reasons for this are many, one of them - slowing down the Earth's rotation period is 2 milliseconds per day. Scientists do not know how the moon formed, suggest that it is - a fragment of the Earth, "chipped" large cosmic body, which struck the surface of the Earth billions of years ago, many

4. Light from the past
Light of the sun, you see, has an age of 30,000 years. The energy that we get from the sun, at its core was formed 30,000 years ago - that is how much time is needed to photons (particles of light) "trial" of the center of the light to the surface. Then they reach the Earth in just 8 minutes. Solar core temperature of more than 13 million degrees, and all generated power must first pass through multiple layers to the surface in the form of light other radiation.

5. Cold welding.
If the two pieces of metal adjoin in space, they are welded to each other. It sounds unbelievable, it's true. If the surface is not blocked oxides will happen. On Earth, this does not happen, because in the atmosphere at the surface oxides are formed immediately. It may seem that this is a big problem, but in fact it is not. All the tools to space flight inadvertently oxidized in the world. A similar phenomenon of cold welding was specifically studied in space, and was confirmed by experiments.

6. Within 10 minutes the spacecraft can photograph up to 1 million square feet. km terrestrial surface, while a surface of the plane 4, the shoot and geography and geology that would be required for at least 80 years.

7. The pressure in the center of the Earth to 3,000,000 times greater than the pressure in the atmosphere.

8. If you fill a teaspoon of the substance that makes up a neutron star, its weight will be approximately 110 million tons!

9. About 27 tons of space dust falls to Earth every day. During the year, more than 10,000 tons of dust lands on Earth.

10. The area of ​​the solar surface the size of a postage stamp shines with the same energy as 1 500 000 candles.