Scientists have long understood that supermasvive black holes weighing. Millions or billions of suns can tear apart stars that come too close. The black holegravity pulls harder on the neatest part of the star, an imbalance that pulls the star apart over a period of minutes or hours, once it gets close enough. When the star gets Close enough, the uneven forces flatten it into a pancake shape. Some previous studies had suggested this flattening would increase the density and temperature inside the star enough to trigger intense nuclear reactions that would tear it apart. But other studies had suggested that the picture would he complicated by shock waves generated during the flattening process and that not nuclear explosion should occur. The devouring of stars by black holes may already have been observed, although at a much later stage. It is thought that several months after the event that rips the star apart, its matter starts swirling into the hole itself. It heats up as it does so, releasing ultraviolet light and X-rays. Brassart aggress. Perhaps it can be observed in the X-rays and gamma rays, but its something that needs to be more studied,he says. Supernova researcher Chris Fryer of the Los Alamos National Laboratory in Los Almos, New Mexico, US, says the deaths of these stars are difficult to simulate, and he is not sure whether the researchers have proven their case they exploded in the process. A the black hole could tear apart the star C the black hole could dwindle its size considerably 2.According to the third paragraph, researchers differed from each other in the problem of B whether the stars would increase its density and temperature D whether the uneven forces would flatten the stars A No nuclear explosion would be triggered inside the star C. Much of the stars matter thrown by the explosion would be beyond the black holes reach 4.What will happen several months after the explosion of the star? B the black holes matter will heat up D the black holes matter will release ultraviolet light and X-rays A confusion C interruption
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节约用水 Save Water
关于准时 About Punctuality
音乐带来好心情 Music Brings Good Mood
秉烛夜读 Study At Night
竞争 Competition
美丽的街道Beautiful Street
美丽人生 Beautiful Life
我喜欢喝茶I Like Drinking Tea
演唱会 The Concert
物质女孩 It Girls
困在咖啡馆Stuck In the Coffee House
岁月是礼物Age Is a Gift
快乐至上Happiness Comes First
兴奋夜 Exciting Night
用英语介绍你最喜欢的一道菜以及它的制作方法
美国的名字American Names
平安夜 Christmas Eve
我能照顾自己 I Can Take Care of Myself
童年Childhood
我对迈克尔杰克逊的记忆 My Memory About Michael Jackson
严厉的爸爸 My Severe Father
中国餐Chinese Meals
我的哥哥My Brother
我的业余爱好My Hobby
做家务Do the Housework
真正的朋友 The True Friend
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