Small Black Holes Haunt Spacetime
 The Cosmic Zoo is filled with exotic inhabitants that frequently challenge the limits of the human imagination. Of these strange beasts, black holes  certainly rank as some of the most mysterious, as well as enticing, entities. As a result, they have captivated scientists for years with their irresistible Sirens' Song of bewildering secrets. These gravitational monsters do not come in only one size, but so far scientists have clearly recognized only two distinct classes. There are black holes of stellar mass that form when an especially massive star runs out of its necessary supply of hydrogen fuel and blasts itself into oblivion in a core-collapse (Type II) supernova explosion. There are also supermassive black holes that haunt the dark hearts of perhaps every large galaxy in the Universe, including our own Milky Way, and these extremely massive entities weigh-in at an incredible millions to billions of times more than our Sun. In October 2019, a team of astrophysicists announced...
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