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Astronomers detect 'monster star'

Discussion in 'Tech, Gadgets & Science Forum' started by Invisible, Jul 23, 2010.

  1. Invisible

    Invisible Admin Staff Member

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    Written By:AFP
    Jul 22, 2010


    The most massive star ever, which is up to 20 million times brighter than the Sun, has been discovered using the Very Large Telescope in Chile, scientists in Britain said.

    The star, named R136a1, is thought to have started off with a mass of up to 320 times that of the Sun and the new discovery has doubled the previously accepted limit of solar mass.

    Please see this video:



    [​IMG]
    Star R136a1 is in a dense cluster of stars 165,000 light years from earth


    Although it has since shed some of its weight, it is so powerful that if it replaced the Sun as the centre of our solar system, it would make life on Earth impossible because of the strength of its ultraviolet radiation.

    R136a1 was discovered as part of a series of massive stars found in two young star clusters by a team of astronomers led by Professor Paul Crowther of Sheffield University in northern England.

    "Unlike humans, these stars are born heavy and lose weight as they age," Crowther said.

    "Being a little over a million years old, the most extreme star R136a1 is already middle-aged and has undergone an intense weight loss programme, shedding a fifth of its initial mass over that time, or more than 50 solar masses.

    "Owing to the rarity of these monsters, I think it is unlikely that this new record will be broken any time soon."

    Crowther added that astronomers faced a challenge to work out how the stars originated.

    "Either they were born so big or smaller stars merged together to produce them," he said.

    The Very Large Telescope project, in the Atacama Desert in northern Chile, is operated by the European Southern Observatory (ESO).

    It features four eight-metre diameter telescopes and is described by the ESO as "the world's biggest eye on the sky".

    Researchers studied the stars using it plus data from the NASA/European Space Agency's Hubble Space Telescope.

    The research, conducted by scientists from Britain, Malaysia and Germany, was published in scientific journal The Monthly Notices of the Royal Astronomical Society.
     
    Last edited by a moderator: Jan 4, 2016
  2. Makanyaga

    Makanyaga JF-Expert Member

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    Invisible:

    Great minds discuss ideas!

    I like all of your posts, difficult to follow for an average minded person! Stukia thread nyingi (siyo zote) ambazo huwa zinaanza mpaka zinafikisha pages zaidi ya 10, unless Poster ni Mwanakijiji and on a very touching social/political issue.

    Keep it up!
     
  3. Kamaka

    Kamaka JF-Expert Member

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    ni great discovery,that shows that there are lot to be found such minerals,treasures ,lost cities,etcanyway let be a chalenge to us.
     
  4. Gaijin

    Gaijin JF-Expert Member

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    mimi kila wakigundua hivi vitu ndio nazidi kuamini UFOs, alliens na alimu ya unajimu ya Sheikh yahya (ambae yasemakana anatumia viumbe vyengine zaidi ya binaadamu kwa kazi zake)

    siamini kama ulimwengu wote huu tuwepo sisi tu!
     
  5. Invisible

    Invisible Admin Staff Member

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    Tulijidanganya tangu zamani sasa mambo yanaanza kuvumbuliwa na tunatakiwa kuwaza upya!
     
  6. Gaijin

    Gaijin JF-Expert Member

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    dont know why but it has reminded me of 'the sirens of titan.' labda sisi ndio tunatumiwa na viumbe vyengine hatujijui tu :(
     
  7. Msanii

    Msanii JF-Expert Member

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    Ila kuna kitu kinanishangaza katika invetories zao hawa wanasayansi.

    Wanasema mlipuko mmoja wa nyota (jua) zilizo nje ya solar system hurusha miale yake ambapo huwasili kwetu in 100 light years. naomba kufafanuliwa hapo.

    Pia kuna hili la galaxy. how dod they come up with galaxy maping ilhali hatupo nje ya galaxy na hakujawahi tumwa chombo nje ya galaxy kupiga picha?

    Naona kuna chumvi katika baadhi ya vumbuzi zao ingawa baadhi naamiini kweli.
     
  8. Gaijin

    Gaijin JF-Expert Member

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    kama sikosei mapping ya galaxies wametumia "cluster analysis (fuzzy cluster analys)" . Kwa kutumia mathematical formulars zake, unaweza kuunda cluster ya vitu once unapojua relation baina ya vitu vichache ndani ya hiyo cluster.

    sijui kiudeep inakuwaje (kama wapo wataalamu watufunze), but najua katika ku map clusters u dont need to know everything in the cluster, a few properties of some points in a cluster can lead u to the shape and approximate location of all points in a cluster
     
  9. Invisible

    Invisible Admin Staff Member

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    Nimeweka video kwenye 1st post, iangalie wakuu...
     
  10. T

    Taso JF-Expert Member

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    kama hukosei, na kama unakosea?
     
  11. Njaa

    Njaa JF-Expert Member

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    Complicated discoveries, Now I know that the space is very complex and it started to drive the human minds
     
  12. Lucchese DeCavalcante

    Lucchese DeCavalcante JF-Expert Member

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    What a scientific discovery
     
  13. Lukolo

    Lukolo JF-Expert Member

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    Hawa jamaa wanakoelekea si kuzuri. Siku si nyingi watagundua makao ya Mungu yaliko. Manake kama wamegundua hilo sayari yenye ukubwa kuliko jua na yenye mwanga mkali kuliko jua basi si ajabu hilo ndo jua linalomlika mbinguni.who knows bwana!!!
     
  14. Gaijin

    Gaijin JF-Expert Member

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    Dunia ndo kwanza changa hii.........itakuwepo angalau kwa miaka elfu kadhaa mbele
     
  15. Abdulhalim

    Abdulhalim JF-Expert Member

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    Light year ni kipimo cha umbali . Mwanga (perharps ndio maada inayoeleweka kwa wepesi kwamba inasafiri kwa kasi zaidi) husafiri kwa mwendokasi unaokadiriwa kuwa kilomita 300,000 kwa sekunde. Tukikokotoa manake 1 light year ni sawa na (jumla ya sekunde ktk mwaka ) zidisha kwa (mwendokasi wa mwanga) , hesabu inayokaribia 9.5 X 10 ^ 12 km, this figure is ridiculously large hata kitarakimu na kimantiki ndio maana wataalamu wakaamua kuifupisha na kuiita light years, kuwakilisha mantiki mbili za muda na umbali wa mwanga kwa wakati mmoja.

    Kwa hiyo basi,kuelezea hiyo kadhia ya 100 light years , manake tukichukulia nyota X imerusha hiyo miale leo hii, ikichukuliwa miale kwamba inasafiri kwa mwendokasi sawa na wa mwanga inamaana miale ile itaifikia sayari yetu baada ya miaka 100!! We all be probably dead isn't it??
     
  16. Jen

    Jen Member

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    Great minds discuss ideas, its true my dearly one.
    But you need to have even brighter mind to discuss about cosmology.
    It is interesting to see that you are sharing such awkward & interesting info.
     
  17. Jen

    Jen Member

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    rafiki yangu msanii, every one is suprised by the vastiness of starry distance:
    - Hata mwanga wa jua unao uona unachukua dkk 8 kufika hapa duniani, kila uamkapo asubuhi ukaona mwanga ujue huo mwanga umetoka juani dkk 8 zilizopita!

    - Pia kama una chombo (spaceship) kinachosafiri kwa mwendo kasi wa mwanga (300,000km/s) utafika kwenye nyota ya karibu kuliko zote baada ya miaka 4 na miezi 2!

    -Nyota pia hufa (hufika mwisho wake): inaweza kuilpuka na huo ndio unakuwa mwisho wake, au ikafifia na kupoteza mwanga, au ikafa na vitu vilivyo karibu yake (black hole death)!!

    - Wanadamu mpaka sasa elimu tuliyonayo kuhusu ulimwengu ni < 0.5%, amini usiamini!
     
  18. Jen

    Jen Member

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    ulimwenguni ziko zaidi ya nyota trillion moja, usishangae mzee.
    Ziko nyota nyingi tu ambazo zinazidi ukubwa kutokea mara 1 ya ukubwa mpaka 50 times, zaidi ni chache sana. Pia bado hazijaeleweka kwanini zinaweza kuwa hivyo, ndio sayansi hiyo.....
     
  19. Kiranga

    Kiranga JF-Expert Member

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    In other words, kwa kuwa nyota hii inakisiwa kuwa light years 165,000 kutoka hapa duniani, basi hata mwanga inaotoa unaotufikia leo ulitoka katika hiyo nyota miaka 165,000 iliyopita. Given that nyota kubwa zina life span ndogo (tushukuru jua letu si kubwa sana) it is quite possible kwamba hii nyota ilishajiunguza completely zamani sana.

    Wanasayansi wengine wanasema haiwezekani kwa nyota kubwa hivi kuumbika kikawaida na wana theory kwamba hizi ni nyota mbili zilizoungana.
     
  20. Jen

    Jen Member

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    Watu wengi hawataki kufatilia mambo, Bwana Invisible Hongera kwa michango yako toka kila kona ya maarifa na misukomisuko ya kiulimwengu.

    2012
    Je mwajua mwanzo wa 2012?
    Kuna kabila moja lilikuwa lajulikana kwa jina la Mayan, hii jamii ilikuwa inaishi Bara America katika himaya ya Azteck. Jamaa walikuwa wamebobea kwenye elimu ya unajimu (huenda hata sisi walikuwa wanatuzidi?!). Wenyewe walitengeneza kalenda ambayo ilikuwa inaendana na matukio makubwa ya kiulimwengu , kalenda yao ilikuwa inaendana mzunguko wa mwezi, mzunguko wa dunia, mzunguko wa jua, mizungukoa ya galaxies. Kalenda yao waliirudisha mpaka miaka bilioni 16 iliyopita (usishangae hata sayansi yetu ya sasa inaonesha ulimwengu una umli wa miaka ~13.7). Haya, mzunguko mkubwa wa kalenda yao unachukua miaka 26,000 huu mzunguko unafatana na jua, sayari zetu zote, na kitovu cha galaxy kuwa katika mstari mmoja. Wenyewe wanasema kila inapotokea hivyo basi, ulimwengu hupatwa na mabadiliko makubwa! (hapa mabadiliko hawakusema maangamizi kama movie ya 2012 - yeye aliamua kufanya hivyo kama sehemu ya biashara).

    Stori ni ndefu, bali rejea:
    2012 End of the World Predictions, Planet X, Mayan Calendar, Two Suns, 2012 Movie Trailer

    Daniel Pinchbeck's blog | Reality Sandwich

    Breaking Open the Head

    Kitabu: 2012 The Return of Quetzalcoatl by Pichbeck, Daniel hiki kitabu kiko mlimani city kuna duka la vitabu pale. Humu utapata mambo chungu mzima.

    ....one love
     
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