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(Òѽ±)¡¾±ê×¼VOA¡¿£²£°£°£¸£­£°£µ£­£±£¶ Scientists Discover Milky Way's Youngest Exploding Star(1/2) ( ±¾´ÎÌýд195´Ê ) [ÏÂÔؽñÈÕ±ê×¼VOAÌýÁ¦×ÊÁÏmp3°æ] (ÓÒ¼üÁí´æΪ) ¡öµã»÷²é¿´ÌýÁ¦´ð°¸¡ö ½«ÒôƵÖеÄÄÚÈÝÌýдÏÂÀ´£¬²¢½«ÄãµÄÌýд¸å»Ø¸´ÔÚ´ËÌûÖУ¬¼´¿É»ñµÃ´ð°¸£º£©»¶Ó­ÈÏÕæ²ÎÓëÌýд£¬ºÍ´ó¼Ò¹²Í¬½ø²½£¡¿É²»Òª¹àˮŶ£¡ Ìýд´ð°¸À´×Ô´ó¼ÒµÄÌýд¸å£¬Ã»ÓÐȨÍþ´ð°¸£¬»¶Ó­Ö¸³ö´íÎó^_^ Astronomers using NASA's Chandra X-ray Observatory and the Very Large Array radio telescope in New Mexico have discovered the remains of a supernova, known as "G1.9", which must have lit up our galaxy with a bright flash of light about 140 years ago. At a NASA news conference Wednesday, scientists said they were able to estimate the age of the supernova by tracking its remnant's rate of expansion over the last 20 years. They say it expanded by 16 percent - a surprisingly large amount - indicating it is much younger than previously thought. The scientist who led the study, Stephen Reynolds of North Carolina State University, said radio and X-ray technology allowed scientists to track the dying star through a dense field of gas and dust that had previously obscured the view. The second most recent supernova is believed to have occurred around 1680. Ever since astronomers discovered that supernova more than 50 years ago, they have been searching for more "missing" supernovae and their remnants. Reynolds explains that scientists have measured the rates of exploding stars in other galaxies, and found out that our own Milky Way galaxy seems to be lagging behind in the number of supernovae per century. Ìýд֮ºó±ðÍüÁ˵½ÒëÎÄÓë×ܽáÌûºÍ´ó¼ÒÒ»ÆðÌÖÂÛŶ^_^ ¡öÒþ²Ø¡ö ѧϰ¸ü¶à£º ±ê×¼VOAÿÈÕÌýд£¨ÍùÆÚ»ã×Ü£¬3ÌìÇ°µÄ²ÄÁϴ𰸾ùÒѹ«²¼£© ³«ÒéÊ飺 ¡¾VOA°æ³«ÒéÊé¡¿ÈÏÕæÌýд£¬¾Ü¾ø¹àË®¿´´ð°¸ Ïà¹ØÁ´½Ó£º VOA This is America »¦½­ÂÛ̳ÌýÁ¦Ìá¸ßÓë½»Á÷·Ïßͼ ¡¾Ô­´´¾­Ñé̸¡¿ÎҵĻ¦½­Ò»ÄêVOA±ê×¼Ó¢ÓïÌýдÌå»á VOAÌýÁ¦Á·Ï°Ïà¹Ø×ÊÔ´ VOAÖм¶ÃÀÓï(»ù´¡Æª) ¡¾ÈëÃÅÕ߱ضÁ¡¿VOAÌýдÌá¸ß·¾¶2.0 VOAÌýÁ¦¿ñÈËѵÁ·Óª »¦½­ÍøºÍVOA¹Ù·½ºÏ×÷´ï³É ÌýÎÞÖ¹¾³Ð¡×é »¦½­´ðÌâÖ½¼ÓÔØÖС­¡­ ÒѾ­½±Àø ablechao,alphee,amylovefans2,anthonytank,AresKevin,autotuzi,beescity,blueland01,borntowinll,calvin_wu320,caoti1234,charlotte123,chen0509,cherry112233,clic,crime_mind,dasa102007,digdug,dunkboy,echo0902,echosong,ennuo1985,evan2008,fattymasker,fidragon,formatc,ghhhjk,ghtybngh,guru0001,hanlu8,harbour_1,hislily,huanghuayuzy,huixiasun,huiyang_cqu,ilovems,j_jenny,jenni,joytzw,julianyhh,knight02,kwyd,kyj,langxuyuan,larryjia,lchje,lei1814984,lemonevaa,leotist,Leverkusen,liangxh127,littlerat888,liuzhener8,liweimin906,llemon,lmlzyy,long2770,luffy27,mandykeifei,max_wfx,meidongni,merlini,mexm2wh,naka,oncewemeet,panxiaoxiao,perua,pooq,princessmian,qierx,refinery,rubyfj,sabrinabj,seeder123,sgze2005,shashadl96,shjhy,since07,skyer09,SMKEVIN,snacks,snow_Z,ssÀ´³Ù,st_john007,straightman,sukiska,summerglass,summerpl,supersheet,susan215,thomascangya,vivianliv86,walkeri,wangyi217,wanna_l,wanzhao1986,weian0310,wendylijuan,windheaven,wukeyu123,wwuugg,xenia734,xiaolinyang,xtpeqii,xuebaosz,Y_Zheng,y2ktracy_ioc,yanhuiwen207,yf_pan,ygclwhl,yolo_chen,yuguiqing,zhuqx969,zhuyi8319,zhuzhuenglis,ziyunisabell,zoe914,zpinc,zql59269,zyl0218,°¢Í¯Ä¾½ã½ã,°¡ß×ààѽ,²ÝľÑýÑý,´ó±¦123,ºÎÊÂÎ÷·ç±¯»­ÉÈ,ºÉÔÏ,¿ÉÀÖÅ®,ÄØà«pp,ΨһµÄ¾«²Ê,Ϧåû,С¾«ÁÕ,СÈË·¹ý,Ûë¿ÚµÄÔ¹â,һХ¶ø¹ý µ¥¸öÓû§²Ù×÷£º½ðÇ®50 [´ËÌù×ÓÒѾ­±»×÷ÕßÓÚ2008-6-8 22:19:59±à¼­¹ý]

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2008-5-16 Astronomers using NASA¡¯s t X-ray observatory and the very large array radio telescope in New Mexico have discovered the remains of a supernova known as G.19 which must have lit up our galaxy with the bright flash of light about 140 years ago. At a NASA news conference Wednesday, scientists said they were able to estimate the age of the supernova by tracking its remnant rate of expansion over the last 20 years. They say it is expanded by 16%, a surprising large amount indicating it is much younger than previously thought. The scientist who led the study Steve R of North Carolina State University said radio and X-ray technology allow scientists to track the dying star to a dense field of gas and dust that had previously obscure the view. The second most recent supernova is believed to have occurred around 1680. Ever since the astronomers discovered that supernova more than 50 years ago, they have been searching for more missing supernovae and their remnants. R explains that the scientists have measured the rates of exploding stars and other galaxies and found out that our own milky way galaxy seem to be lagging behind in the number of supernovae per century.

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Astronomers use in necess * extraobservetory and very large array radio telescope in Mexico has discovered the remains of super novel, known as J.19, which must of lighter galaxy with pride flush of light about one hundred and forty years ago. At * a news conference Wednesday, scientists said they are able to estimate the age of the super novel by tracking its reminance * expansion over the last twenty years. They say it expanded by sixty percent. It surprisingly large amount indicating it is much younger than previously thought. The scientist two led the study Steven * of North Carolina state university said radio and X-ray technology allowed scientist to track the dying star to the * the gas and dust tha has previously obsecure the view. The second most recent super novel is believed to occur around sixteen eighty. Ever since astronomers discover that more than fifty years ago, they had been searching for more missing super novi and *. * explains that scientists have measured the rays of exloding stars and other galaxies and found out that they are own way galaxy seem to be * behind in the number of super novi per century.

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Astronomers using NASA's ch?? , x-ray observatory and the very large array radio telescope in New Mexico have discoverd the remains of a supernova, known as G.19, which must have lit up our galaxy with the bright flash of light about 140 years ago. At a NASA new conference Wednesday, scientists said they were able to estimate the age of the supervona by tracking its remnants' rate expansion over the last 20 years. They say it expanded by 16%, a surprisingly large amount, indicating it is much younger than previously thought. The scientist who led the study, Steve Renalds of North Carolina State University said radio and x-ray technology allowed scientists to track the dying star through a dense field of gas and dust that had previously obscured the view. The second most recent supernova is believed to have occured around 1680. Ever since the astronomers discovered that supernova more than 50 years ago, they have been searching for more missing supernovae and their remnants. Ranalds explains that scientists have measured the rates of the exploding stars in other galaxies and found out that our own Milky Way galaxy seems to be lagging behind in the number of supernovae per century.

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astronomers using NASA's * X-ray observatory and the very large array radio telescope in the Mexico have discovered the remains of the supernova, know as G.19 which must lit up our galaxy with a bright flash of light about 140 years ago.at NASA's news confress Wensday scientists said they were able to estimate the age of the supernova by traking its remnant ray's expansion over the last 20 years. they said it expanded by 16%, a suprisingly large amount, indicating it is much younger than previously thought. the scientists who led the study, SR of N state unniversity said radio and X-ray technology allowed scientists to trake the dying star to a dense field of gas and dust that had previously obscured the view. the scend most recent supernova is believed have ocured around 1680 ,ever since the asronomers discovered that supernova more than 50 years ago, they have been seaching for more missing supernovae and their remnants .R explained that scientists have measured rays of exploding stars and other galaxies and found out that were unknowing way galaxy seems to be lagging behind in the number of supernovae percentury. ´ðÌâÓÃʱ£º[26:05]

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Astronomers using NASA's Chandra X-ray observatory and the very large array radio telescope in New Mexico have discovered the remains of a super nova known as G.19 which must have l* up our galaxy with a pride flash of light about 140 years ago. At NASA news conference Wednesday, scientists said they were able to estimate the age of the super nova by tracking its remanents rate of expansion over the last 20 years. They say it has expanded by 16%, a surprisingly large amount indicating it is much younger than previously thought. The scientist to lead the study, SR of North Carolina State University, said radio and X-ray technology allowed scientists to tack the dying star through a dense field of gas and dust that had previously obscured the view. The second most recent super nova is believed to have occured around 1680. Even since astronomers discovered that super nova mre than 50 years ago, they have been searching for more missing super novae and their remanents. R explains that scientists have measured the rates of exploding stars in other galaxies and found out own milky way galaxy seems to be laging behind in the number of super novae per century.

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080516 Astronomers using analyst X-ray observatory and the very large array radio telescope in New Mexico have discovered the remains of supernova known as G.19, which must have lit up our galaxy with the bright flash of light about 140 years ago. At a NASA news conference on Wednesday, scientists were able to estimated the age of the supernova by tracking its remnant rate of expansion over the last 20 years, they say it is expanded by 16 percent, it is surprisingly large amount indicating it is munch younger than previously thought. The scientist who led the study Steve R of North Carolina State University said radio and X-ray technology allow scientist to track the dying star to a dense field of gas and dust that had previously obscure the view. The second most recent supernova is believed to have occurred around 1680, ever since astronomers discovered that supernova more than 50 years ago that they have been searching for more missing supernova and their remnants. R explains that the scientists have measured the rate of exploding stars and other galaxies, and found out that our own milky way galaxy seem to be lagging behind in the number of supernova per century.

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Astronomers using NASA's Chandra X-ray Observatory and the very large array radio telescope in New Mexico have discovered the remains of a supernova, known as "G.19", which must have lit up our galaxy with a bright flash of light about 140 years ago. At a NASA news conference Wednesday, scientists said they were able to estimate the age of the supernova by tracking its remnant's rate of expension over the last 20 years. They say it expanded by 16% - a suprisingly large amout - indicating it is much younger than previously thought. The scientist who led the study, Stephen Reynolds of North Carolina State University, said radio and X-ray technology allowed scietists to track the dying star through a dense field of gas and dust that had previously obscured the view. The second most recent supernova is believed to have occurred around 1680. Ever since astronomers discovered that supernova more than 50 years ago, they have been searching for more missing supernovae and their remnants. Reynolds explains that scientists have measured the rates of exploding stars in other galaxies, and found out that our own Milky Way galaxy seems to be lagging behind in the number of supernovae per century. ´ð°¸ºÃÏñÓдí~~~ Ó¦¸ÃÊÇG.19 ¶ø²»ÊÇG1.9°É~~~ [´ËÌù×ÓÒѾ­±»×÷ÕßÓÚ2008-5-16 8:42:43±à¼­¹ý]

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