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THE STARS, CHARACTERISTICS

Updated on August 27, 2009

 THE STARS.

  On a clear, dark night,if you lookup into the sky you might see as many as 3000 stars. With a large telescope, you can see billions of individual stars. Astronomers estimate that more than 100 billion trillion stars shine in the observable universe.

 The stars we see sparkling in the night sky are actually jaint balls of glowing gas. Stars are born from vast clouds of dust and gas such as the Orient Nebula. Some stars die in a violent explosion called a supernova.

 CHARACTERISTICS.

Like the sun each star is an enormous ball of glowing gas, chiefly hydrogen and helium. But the stars vary immensely in distance from Earth, size, temparature, colour and brightness.

Distance: Our solarsystem is in a region of the Milky Way galaxy where stars lie about 4-5 light years apart. Elsewhere in the milky way, distance between the stars can be greater or smaller. In certain group of stars, stars can be less than 0.01 light year apart.

            The stars farthest away from earth but still in the milky way are about 80000 light years away. The nearest stars in other galaxies are about 200,000 light years away. And the farthest known stars are billions of light years distant.

 Size: The size of stars varies from a diameter of about 16 kilometers to a diameter  far larger than the sun's. Some of the largest stars have diameters 1,000 times the size of Earth's.Antars is about 600 times the size of the sun.

TEMPERATURE AND COLOUR: A star's surface temperature and its colour are directly linked.The coolest stars have temperatures less than 3,000 degre C. These stars are red. the hottest stars have temperatures that soar above 50,000 derge C.These stars are blue. The stars with more moderate temperatures can be white, such as Polaris(The Norath Star),or yellow, such as the sun.Some stars have in-between colours.Arcturus glows orange-red.Sirius is blue-white.

BRIGHTNESS. During most of a star's life, it shines because of a nuclear reaction that take place deep within it. During the reaction, some of the star's hydrogen changes in to helium and some changes in to energy.This energy eventually escapes as light, heat and other forms of electromagnetic radiation. A star's brightnes depends on how much light energy it sends out

A star's brightness is related to its temperature and colour because temperature affects how much light energy is emitted.A star also may look bright or dim to observers on earth depending on its size and its distance from earth.

HOW STARS ARE FORMED:Stars may seem unchanging to us, but they pass through a life cycle in which they form, age, and then die. These stages of stellar evolution are similar for all stars.

Astronomers believe that stars are born in groups , not singly.They form out of nebulae, which are large clouds of hydrogen gas, dust and other interstellar material.A nebula may be formed by material thrown off the surface of gaint stars.

HOW STARS DIE: Whatever the speed at which a star burns its hydrogen fuel, eventually its supply of hydrogen drops below a certain level.when this happens , the stars fusion and energy production fall off , and the core stars to collapse slowly. As the pressure in the core increases, temperature rises.At the same time,the outer layers of the stars gases expand greatly, then cool off. Depending on the mass of the original star, the star then becomes either a gaint or super gaint.Red gaints and super gaints are aging stars. A star may remain at this stage for several milion years before all nuclear reactions cease.

When nuclear fusion no longer occures, there is nothing to stop gravitational collapse. If the Star has about the same mass as the sun, it probably will contract to become a white dwarf.With the passage of time the remaining heat and light will all radiate away. When there is no energy left, the star will become a black dwarf, a dead star.

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    • profile image

      felixis 7 years ago

      Thanks sir .... love you

    • profile image

      vitani 7 years ago

      cool! thanks for your help

    • profile image

      LOL 7 years ago

      LOLOLOLOLOLOLOLOL

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      annonymous 7 years ago

      fascinating!!!!!!!!!!!!!!!!!!!!

    • profile image

      danna 6 years ago

      tama!!!!!!!!!!!!!!!!

    • profile image

      hacat13 6 years ago

      who is it by??

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      NASA 6 years ago

      Many mistakes in the passage, the Orient Nebula does not exist; there is, however, an Orion Nebula, located in the constellation named after Orion the Hunter.

      I would like to add, stars can also be categorized according to chemical composition, and their chemical compositions can be discovered by scientists from spectrums taken by thermograms.

    • profile image

      do Work 6 years ago

      thanx for ya help

    • profile image

      maetot 6 years ago

      ewwwwwwwwwwwww-------so--- facinating

    • profile image

      nae nawe 6 years ago

      thnx

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      geaf 6 years ago

      not good

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      pam 6 years ago

      i love it ...

    • profile image

      miguel baog 6 years ago

      tang ina

    • profile image

      john william e. reyes gwapo 6 years ago

      im a ahhhhhhhhh super nova superstar

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      marc simon 6 years ago

      thanks 4 ur help man!!!!

    • profile image

      Benedict 6 years ago

      thanks po nagawa ko din yung project ko hehehe!

    • profile image

      ALY 6 years ago

      HAHAHAHAHAHA!!!!!

    • profile image

      randy bobandy 5 years ago

      IM PREGNANT

    • profile image

      mayann 5 years ago

      ahpaki explain naman ang DESCRIBE THE RELATIONSHIP BETWEEN THE COLOR AND TEMPERATURE OF A STAR .. para po magwa namin ang aming project .. thank u .. :))

    • profile image

      renelyn 5 years ago

      wow!! its so cool!! thanks for that.. bacause it helped me to do my assignment... :))

    • profile image

      jared 5 years ago

      wasfdsadfsadfsd

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      Nhica 5 years ago

      thanks for the help.. I really appreciate it :DD

    • profile image

      angel 5 years ago

      .,nka2tulong x ito xa paggawa ng mga hard axx ...

    • profile image

      iloVeAlLan 5 years ago

      tnx ulit ahhhhhhhhhh

    • profile image

      xdddd 5 years ago

      ty guyss

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      the mama 5 years ago

      nc1 NASA

    • profile image

      bdfbdmdfn 5 years ago

      i hate this

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      exam coming up 5 years ago

      hot stars are blue and cooler stars are red

    • profile image

      fia 5 years ago

      may nakuha ako tnx..

    • profile image

      fydrdghuQfgh 5 years ago

      cooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooolllllllllllllllllllllllllllllllllllllllllllllll

    • profile image

      Anonymous 5 years ago

      /b/ros maybe we should like.....POST SPIDERMAN ALL UP IN THIS THREAD YEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEAAAAAAAAAH!

    • profile image

      poy 5 years ago

      istoryaheeee

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      jen,rose 5 years ago

      tnx tapox nami gwa ng projct.yahooooooooooooooooooooooo........

    • profile image

      jebylyn 5 years ago

      tnks i hpoe i could get a+ 4 this

    • profile image

      shiela 5 years ago

      thank you...

    • profile image

      Alexa Mae Feir 5 years ago

      Thanks Nakagawa Din Ng pRoject Dhil Dito. :))

      Salamat Tlaga NG mARAMI.:DDD

    • profile image

      5 years ago

      mellons

    • profile image

      5 years ago

      love u jm

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      sophee king 5 years ago

      using th is for a research report...helped a lot!!!

    • profile image

      Anyonmus 5 years ago

      Helpful.Thanks.

    • profile image

      anonymus 5 years ago

      tanks

    • profile image

      hi 5 years ago

      helped me study for exams

    • profile image

      saranghae 4 years ago

      thanks 4 ur help,, now i can study 4 my exam,,,

    • profile image

      rosenel ragas 4 years ago

      thanx that wonderful and interesting information about the characteristics of the stars.....Ive learned a lot from here

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      cool girl..!! amalayer..!! 4 years ago

      thanks 4 this ..!! its helps me make my assignment..!! ^^ ty

    • profile image

      kljmnk 4 years ago

      ???/

    • profile image

      scott bj nadela 4 years ago

      weeeeeeeeeeeeh d nga?

      hahahha XD

    • profile image

      RIZZA MAE ESTERA 4 years ago

      THANK YOU FOR HELPING ME

    • profile image

      ana marie 4 years ago

      so beautiful in the world

    • profile image

      abby 4 years ago

      i like a star

    • profile image

      dawgy 4 years ago

      this is so offul

    • profile image

      lmkl 4 years ago

      thanks to help

    • profile image

      Beat my Meat really hard 4 years ago

      Cool

    • profile image

      Turn around Sean 4 years ago

      Lol funny name ^

    • profile image

      kenneth samson 4 years ago

      it`s so cool ha guys (dami ko na22nan)

    • profile image

      yuki 3 years ago

      it is so hard to find

    • profile image

      bryant 3 years ago

      i like star

    • profile image

      cyril 3 years ago

      o o o corny i lovd stars

    • profile image

      dfjgjkh 3 years ago

      Tae ;kgp\g

    • profile image

      bea 3 years ago

      panget wag na kasi kayo mag-post

    • profile image

      rhandel 3 years ago

      thanks po dito nagawa ko na project ng kaibigan ko hehe

    • profile image

      joanna 3 years ago

      thankss.. po

    • profile image

      ffyugfyfth 3 years ago

      nice

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      Rachelle 2 years ago

      Tnx nagaw me na yung project ko!!!!!:)xD

    • profile image

      judges 16 months ago

      ah ganun ba samin hindi pah eh ngaun palang?hahahahaha

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