孤岛惊魂

天文学家确认已知最大星系边界 宽度相当于十七个银河系并排排列_我的网站

A |     Disgraced singer-songwriter R. Kelly was sentenced to 30 years in federal prison on Wednesday, marking the end of a six-week trial in Brooklyn that included testimony from dozens of witnesses, including those who accused the 55-year-old of both sexual and physical abuse.,The US Attorney's Office for the Eastern District of New York was aiming for Kelly to be given at least 25 years behind bars, per a June 8 memo. The filing set forth that Kelly, now 55, should spend the rest of his life behind bars due to the fact he "avoided punishment for almost 30 years and must now be held to account.",Kelly's attorneys argued their client should only serve a decade behind bars because he "experienced a traumatic childhood involving severe, prolonged childhood sexual abuse, poverty, and violence.”,During sentencing Wednesday afternoon, US District Judge Ann M. Donnelly stated to the court that “the public has to be protected from behaviors like this.”,"These crimes were calculated and carefully planned and regularly executed for almost 25 years," Donnelly said, as reported by the New York Times.,The judge recounted a number of testimonies during sentencing, highlighting Kelly's pattern of sexual abuse and violence against women, girls, and boys.,Kelly's legal team plans to appeal the sentencing.,"We were prepared for it," said defense attorney Jennifer Bonjean, who represented disgraced comedian Bill Cosby in a civil case he lost earlier this month. "We are now prepared to fight this appeal.",© AP Photo / Elizabeth WilliamsIn this courtroom sketch, R. Kelly and his attorney Jennifer Bonjean, left, appear during his sentencing hearing in federal court, Wednesday, June 29, 2022, in New York. The former R&B superstar was convicted of racketeering and other crimes. In this courtroom sketch, R. Kelly and his attorney Jennifer Bonjean, left, appear during his sentencing hearing in federal court, Wednesday, June 29, 2022, in New York. The former R&B superstar was convicted of racketeering and other crimes. © AP Photo / Elizabeth Williams,Federal prosecutors say Kelly used his "deep network" and "larger-than-life musical persona" to gain access to teenagers and young adults--"many of whom were particularly vulnerable.","The government has little doubt that if afforded an opportunity to offend again, the defendant would do so," prosecutors said earlier this month. "He poses a serious danger to the public.",Lizzette Martinez, a woman featured in the documentary 'Surviving R. Kelly,' was accompanied by her attorney Gloria Allred when she took the stand to provide a witness statement.,"January 1995 eventually changed me forever," Martinez testified, detailing that she was a 17-year-old aspiring singer when she met Kelly in a mall.,Now 45, Martinez told the court that she was "left in shock, confused, and in tears" when Kelly, who promised to mentor her, began to abuse her.,“Robert, you destroyed so many people’s lives,” Martinez told Kelly, who did not make eye contact.,YouTube Deletes Two R. Kelly’s Channels Amid Sex-Trafficking Conviction6 October 2021, 09:18 GMT,“I do not know how to put a price on all I’ve gone through,” she said. “I am now 45, a mother and I struggle with mental health.”,Rumors and even footage of Kelly's misdeeds with minors and women have been circulating since the 90s, around the same time Kelly married teenage R&B artist Aaliyah. Despite dozens of alleged victims coming forward over the decades, accountability appeared to avoid Kelly until the 2019 documentary "Surviving R. Kelly" coincided with the #MeToo movement.,The intersection of the #MuteRKelly and #MeToo movements drummed up public support for victims seeking litigation against the Grammy-award-winning singer. Kelly is still facing a number of criminal charges in Chicago, Illinois, and Minnesota.,Kelly has remained behind bars since his initial arrest in July 2019. The singer-songwriter did not take the stand during trial.。    这张图像展示了已知最大星系IC1101。图片来源：NASA/ESA/哈勃太空望远镜　　据ScienceNews网站最新报道，包括西班牙天文学家在内的联合团队通过超深成像观测确认已知最大星系边界。这个名为IC1101的星系直径达到约520千秒差距（星系尺度单位），接近170万光年，宽度相当于17个银河系并排排列，而这个星系目前还在成长。　　确定这一尺度的关键，是天文学家获取了迄今对IC1101曝光时间最长、探测最深的影像。这些图像由位于西班牙加那利群岛拉帕尔马岛的艾萨克·牛顿望远镜于早前拍摄。经过最新详细测算，天文学家得以识别这颗巨星系暗淡的外缘，同时算出IC1101的恒星物质总质量约为3.4万亿个太阳质量。　　IC1101坐落在距地球超过10亿光年的Abell2029星系团中心，是该星系团中光度最高的星系。这类星系位居宇宙中最庞大星系之列，其成长方式是通过反复吞并附近较小的星系来不断扩张，这一过程被称作星系同类相食。　　此前的研究已经暗示IC1101体量巨大，但始终未能精确界定星系本体与外围星系团弥散物质之间的过渡边界。本次超深观测填补了这一空白。加那利天体物理研究所的天文学家们在星系边缘识别出带状尾流结构，认为这是IC1101与其他星系发生并合的产物，表明该星系迄今仍在吸积物质，生长并未停止。

B | 　　加那利天体物理研究所天文学家卡洛斯·马雷罗-德拉罗萨表示，IC1101展示了涉及反复并合与吸积的星系演化过程在极端尺度上的样貌，是可参照的星系未来演变样本。　　这次边界判定之所以重要，是因为最亮团星系的暗弱外围通常会混入星系团的弥漫星光，导致很难判断巨星系本体的终结位置。

C | IC1101的测量结果为这类天体的尺度研究提供了方法论样本。

D | 作为已知最大的星系，它的存在也揭示了在数十亿年的时间尺度上，宇宙中的最大尺度星系结构可以通过持续吞并周围星系而发展到何等极端的规模。（记者张梦然）。

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