Last year, astronomers turned to the supermassive black hole at the center of our galaxy to watch it tear apart a dusty gas cloud called G2. It was an event widely anticipated, including in Discover ("To the Edge and Back," September 2014, "When a Slumbering Monster Awakens," April 2014 and "Our Black Hole Lights Up," January/ February 2014). The discovery of G2, which was estimated to have the mass of three Earths, was announced in January 2012 by Stefan Gillessen of the Max Planck Institute for Extraterrestrial Physics. Gravity from the black hole, called Sagittarius A~*, already had begun stretching G2, Gillessen's team said.
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机译：去年，天文学家转向我们银河系中心的超大质量黑洞，目睹它撕裂了一个名为G2的尘埃云。这是一个广为期待的事件，包括“发现”（2014年9月的“ To the Edge and Back”，2014年4月的“当沉睡的怪物醒来时”和2014年1月/ 2月的“我们的黑洞发光”）。马克斯·普朗克外星物理研究所的斯特凡·吉列森于2012年1月宣布发现了G2，据估计它具有三个地球的质量。吉列森的团队说，被称为人马座A〜*的黑洞引力已经开始伸展G2。
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