The current picture is that all galaxies may have a supermassive black hole in their center, and that this black hole swallows gas and dust in the middle of the galaxies generating huge amounts of radiation - until all the nearby mass has been swallowed a
The current picture is that all galaxies may have a supermassive black hole in their center, and that this black hole swallows gas and dust in the middle of the galaxies generating huge amounts of radiation - until all the nearby mass has been swallowed a
现在的照片是所有的星系在它们中心可能存在超大质量的黑洞，而且这个黑洞在星系中心吞咽气体与尘埃产生极大量辐射-直到所有附近质量被吞咽，而且过程停止下来。