Fascinating Facts About Stars(List 2)

Fascinating Facts About Stars(List 2)(Interestingawesome.blogspot.com)

When you sitting around the campfire at night gazing up at the open sky, full of stars, is a very special part in the camping. You feel  very small in such a big universe. Stars are one of the fundamental objects in the universe.  A star is a hot, roughly spherical ball of gas that shines as a result of nuclear fusion reactions in its core. Stars and indeed the entire universe are made mostly of hydrogen, the simplest and lightest element. By contrast, our bodies are composed of many complex elements, such as carbon, nitrogen, calcium, and iron. These elements are created in the cores of stars, and the final act in the lives of many stars is a massive explosion that distributes the elements it has created into the galaxy. Eventually these elements may form another star, or a planet, or life on that planet.

You are always wondering about space, ain't you? Then what do you think about stars? Yes, Stars are awesome, cool, weird and sometimes very dangerous. So enjoy these  awesome star facts. Learn how stars are formed, what  are  the various types of stars, how many stars are there? Why they have different  colors? and much more. In a case, If you missed the 1^st part of this list,( Fascinating Facts About Stars), you can read it from HERE.

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1. Stars are a source of a gravity field. This is what keeps planets close to them. It is also not unusual for two stars to orbit each other. This happens when they are close together. This is also because of gravity, in the same way as the Earth orbits the Sun.
2.  These binary stars (binary meaning "two") are thought to be very common. There are even groups of three or more stars orbiting each other.  Proxima Centauri is the smallest star in a group of three.
3. Stars are not spread evenly across all of space. They are grouped into galaxies . A typical galaxy contains hundreds of billions of stars.
4. Stars form in nebulas, which are large gases areas. As gravity attracts more and more gas, young stars (called protostars) start to form in thick molecular gases cloud areas of the nebula.
5. A brown dwarf forms if a star cannot get hot enough to reach nuclear fusion. Its failed to become a proper star but is still not a planet because it does glow dimly.
6. As yellow dwarf stars like our Sun start to run out of hydrogen fuel, the core shrinks, heats and pushes out the rest of the star turning it into a red giant.
7. Stars go through many phases of life, much like other organic beings. When a star is dying, it turns into a “white dwarf”, when the star uses up all of the chemicals required for its nuclear fusion reaction, it will fuse a large clump, which will emit white light until it finally darkens for good.
   
8. Before a massive star goes into a white dwarf phase however, it undergoes an incredible chain reaction in which it burns through the rest of its fuel at a dramatic pace and explodes due to the speed of the reaction. This reaction is known as a supernova.
9. Contrary to popular belief a black hole does not “suck” in the objects around it. Due to their incredible mass, according to Einstein’s general theory of relativity, they actually bend space in such a way that everything within their gravitational field is pushed towards it. A black hole’s gravitational field is so strong that even light cannot escape it.
10. Neutron stars are extremely easy to recognize. Opposed to white dwarves they are easy for astronomers to spot through telescopes because they bend the light around them, which allows them to be seen easily through infrared telescopes.
11. Eta Carinae is one of the largest stars in the known galaxy , it is designated as a hyper-giant.
12. On a clear night, you cannot see even a fraction of these stars. However during a clear night, in the country, with the naked eye you can see up to 19,000,000,000,000,000 miles away, very easily.
13. The most common type of stars within the universe are red dwarves. This stars are common due to their low mass, and the fact that they live for a very long time before turning in to red dwarves.
14.  Opposite to that, the hottest stars are blue due to their incredible mass and the amount of chemical reactions occurring within them.
15.  At the coolest end of stellar colors are red stars, that are for the most part cool red giants that have evolved off the main sequence. These stars have surface temperatures of about 2,000 or so degrees.
    
16. But as stars get hotter, their colors change from red, to orange, to yellow, to white, and finally to blue, which are stars that mostly fall into the Wolf Rayet class, and have surface temperatures of anything between 25,000 and 50,000K,
17.  Despite many peoples claims of there being “green” stars, there are no stars in the known universe which are green. A green star is usually a side effect of a looking through a telescope on a certain wavelength.
18. Twinkle Twinkle Little Star. The stars aren’t actually twinkling. It’s the turbulence in the Earth’s atmosphere which causes the star’s light to get slightly bent as it travels down to us - that makes it look like they are twinkling. Our eyes see the stars changing brightness and position, giving the appearance of twinkling.
19. The Southern Cross is the smallest (in area) of all the constellations. It is also known as Crux. The brightest star, Acrux, Alpha Crucis, is the 12th brightest star in our galaxy.
20. One of the biggest stars is Eta Carinae and this is actually 2 massive stars, which is located about 8,000 light years from Earth. No-one knows how much time it has left before it ends in a supernova explosion.
    
21. A shooting star is not a star. It’s rock or dust, moving so fast that it heats up when it reaches the Earth’s atmosphere. Astronomers call shooting stars, meteors.
22. The smallest stars are about 0.08 times the mass of the Sun. If a ball of gas is any smaller than that, its internal temperature will not be high enough to ignite the necessary fusion reactions in its core. It would instead be a brown dwarf, a small, dark, cool ball of dust and gas that never quite becomes a star.
23. Until recently, astronomers thought the collision of two stars forming a new star occurred very rarely in the universe. By the beginning of the twenty-first century, however, they had gathered enough observational Information to know that such collisions are not uncommon within dense clusters of stars.
24. Astronomers estimate that several hundred such collisions occur every hour. With 100 billion galaxies in the observable universe and each galaxy containing an average of 30 globular clusters, most of the collisions occur far away from the Earth .
25. Over the lifetime (about 10 billion years) of our home galaxy, the Milky Way, astronomers believe there have been at least 1 million collisions within its globular clusters, or about 1 every 10,000 years.

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So what do you think about Stars? Do you want to add some more interesting facts about stars? So don’t wait, hit the comments and join the discussion.

Glad to see you here. Keep checking Interestingawesome.blogspot.com for more amazing facts .Don't forget to share this knowledge  about stars with your friends in your network .Thanks for reading..!!

Astronomy Cosmos Space Universe 6:29:00 PM