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10 facts about space that few know about


For centuries people looked at the dark night sky, shimmering on his huge canvas with bright specks of stars were surprised by the quaint spots on the silver disc...

Many scientists, from ancient times trying to capture all this boundless splendor own imperfect mind, make numerous assumptions, put forward the ingenious hypothesis, – what is it?

How our universe? Why the stars Shine differently? Why the Moon changes phase? Lives there anyone there? But on other planets?..

In the XX century humanity finally overcame earth's gravity and were able to see space in all its greatness not from the surface of the home planet, and downright "major events".

Modern telescopes allows us to peer into neighbouring galaxies, but, alas, we still don't really know even what's happening on the outskirts of the Solar system.

The vast, the great and mysterious cosmos is so huge that we can't realize until the end of its scope. However, in the last century, earth scientists have learned about our Universe a lot of interesting facts.

Here are just 10 of them:

10. Revolves around the Earth, the junkyard of space debris

The first artificial Earth satellite (Soviet spacecraft "Sputnik-1") was launched on 4 October 1957, a total of some 61 years ago.

But this time, humanity, alas, had very much "litter" around our blue planet. According to various estimates, today on the earth's orbit at high speed from 350 to 500 thousand objects weighing from a couple grams to 15 tons: "the remains of" spent satellites, and not had time to end to burn up in the atmosphere of stage space ships, and lost during the space missions of the last details and items, etc.

They often face each other, exploding into thousands of even smaller parts. And each of these objects is capable (with a particularly "good" hit) damage or spacesuits, or even a whole space station, given their speed (9834 m/s) and inertia.

And now leading scientists and cosmologists are struggling with the problem of how to gather (or destroy) all that space junkyard.

9. The Martian volcano Olympus is the highest peak in the Solar system

The highest peak on planet Earth is, as we all know, Everest (or Everest) – 8848 m. Impressive? And by the standards of space – absolutely not.

The highest peak in the Solar system is on Mars is the extinct volcano Olympus, which is higher than Everest almost 3 times. Its height is 26.5-27 km, and the diameter at the base is about 540 km. this is really a Royal (or divine) size!

8. In space there is no sounds

Many of us love to watch a massive and colorful fantastic fighters with interstellar battles, where a huge space cruisers very nicely explode with a great noise. So – to put it mildly, not true.

First, the open space will not work large-scale explosion cloud of flame, for the flame actually needs oxygen. And where will it end up in the vacuum of space?

If from the bowels of the ship. But that would not be a huge and scary "BANG!", a quick and soft "Shhhh..." And the roar you do not hear because sound waves need some medium (air, water, etc.), and in the space we have, again, only vacuum.

7. On Venus a day lasts longer than a year

Venus is perhaps the strangest planet in the Solar system. First, she is unique among all the planets revolve counter-clockwise. Why? And precisely nobody will tell you: scientists are still arguing about the causes of this phenomenon.

Secondly, it is the hottest planet, the temperature on its surface reaches 462º C. by the Way, here the atmospheric pressure is 92 times greater than earth's. As it is not very Venus lives up to its name, is creepy she is indeed the goddess of love.

Oh and one big oddity: around the Sun, this planet is spinning faster than it turns around its own axis. In the end, it turns out that a day on Venus lasts 243 earth days (wow! more than 7 months!), a year is only 225 earth days. Day is longer than a year! How do you mean?

6. Saturn floats

Huge Saturn, the Equatorial diameter of which is 9.5 times larger than the earth, however, is a relatively "light" planet, because its density is the smallest in the Solar system: only 0,687 g/cm3, is less than the density of water. (Incidentally, the "dense" planet – our home Earth).

The fact that Saturn do not have a solid surface: it is 96% hydrogen, 3% helium and the remaining 1% of methane, ammonia and other gases.

So if somewhere in the Universe there was a huge container of water (with a diameter of slightly more than 120 thousand kilometers – only!), the Saturn would not drown in it, and floated on the water surface like a balloon. Yeah... it would be an Incredible sight!

5. 99.86% of Solar system's mass is the mass of the Sun

When you see the Solar system in the picture, then I can hardly imagine the true size of the planets. Of course, they are usually drawn to the approximate scale: mercury is smallest, Jupiter is largest, somewhere on the edge, you can see the side of the huge Sun...

But here's the specific impressive figures: the mass of Jupiter is 2.5 times more than all the rest (put together) of the planets Jupiter; can accommodate 1000 planets the size of Earth; and the Sun larger than the Earth 300 thousand (!) times, and its mass is 99,86% of the total mass of the Solar system (i.e. planets and asteroids account for only 0.14 percent).

And still, on a cosmic scale, our Sun is a small star. And the largest star known to mankind at the moment is UY Shield. And it is 1700 times larger than the Sun! If it were in the Solar system, it would occupy all the space until the orbit of Jupiter.

4. The neutron star rotates with a speed of 500 revolutions per second

Some of the most amazing objects in our Universe – a neutron star. It would seem, by the standards of space they're "Babes", up to 20 km in diameter. But their mass exceeds (!) the mass of our Sun.

In fact, a neutron star is a normal star, compressed incredible power to such a density that one spoon of this substance are equal in mass, about 1000 the great pyramids of Giza!

In this case the neutron star even with the unimaginable speed (up to 500 revs per second!) revolve around its axis, creating so monstrously strong magnetic field that it is literally "parses atoms" all that approaches it close enough.

3. Works in space "cold welding"

We all know what on Earth to join together two pieces of metal (i.e. the weld), they must be very great heat, so that they can merge with each other at the molecular level at the point of contact.

In open space it happens without heating: you can just put two piece of metal (same metal) to each other, and they firmly stick together.

It is precisely the "cold welding", the metal particles in this case connects the vacuum. Hmm... But why then not "stick" to each other, for example, a space station, and pristykovyvayas to her module? Or why every artificial satellite does not drag a tail of "sticking" it in orbit space debris? Yes, because on Earth they are specially coated with a layer of oxides that prevent metal objects "boil".

2. A person can survive in outer space without a spacesuit: 90 seconds

Again, think of fantastic films about space: is usually the person who suddenly and unwittingly thrown into an outdoor vacuum or quickly (literally seconds) to the state of the frozen ice blocks, or very unaesthetic explodes from the inside.

Actually (but only in theory, because so far, thank God, no one checked it in reality) a man can survive in space for up to 90 seconds, if you manage to immediately exhale all the air from his lungs.

But, of course, to hold on for "just fifteen minutes", is an incredibly difficult task. If the lungs still remain a little gas – they just break in the first seconds. A few seconds later all the moisture in the human body starts to boil and evaporate, turning into really the crust of ice on the skin.

At the same time, the skin will suffer from severe sunburns and cosmic radiation (and after it will be very quickly overwhelmed and subcutaneous tissue).

All of this will feel miserable because his heart and mind will continue to live exactly the same fifteen minutes. The horror! Even scary to imagine...

1. In the constellation of Sagittarius is alcoholic dust cloud

But this fact brings to mind the old song of "dune": "If the sea was vodka would I submarine".
So, ladies and gentlemen alcoholics: if you have a very fast spaceship, it "only" 26 thousand light-years from

The earth, in the constellation of Sagittarius, you can find a huge cloud Sagittarius B2 consisting of gaseous billion liters of vinyl alcohol. Hmm... Although it can hardly drink...

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