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    Astronomers are beginning to understand what happens when black holes get the urge to roam through the Milky Way. Typically, a supermassive black hole (SMBH) exists at the core of a massive galaxy. But sometimes SMBHs may “wander” throughout their host galaxy, remaining far from the center in regions such as the stellar halo, a nearly spherical area of stars and gas that surrounds the main section of the galaxy. May Impact Our Solar System Every 100 Billion Years “It is extremely unlikely that any wandering supermassive black hole will come close enough to our Sun to have any impact on our solar system,” said lead author Michael Tremmel, a postdoctoral fellow at the Yale Center for Astronomy and Astrophysics. “We estimate that a close approach of one of these wanderers that is able to affect our solar system should occur every 100 billion years or so, or nearly 10 times the age of the universe.” 

United statesGeorge chaplineMichael tremmelMaxwell moeMax goldbergUniversity college londonYale universityUniversity of californiaUniversity of washingtonLawrence berkeley national laboratoryUniversity of arizonaYale centerImpact our solar system everyStill only scratchingDual active galactic nucleiMilky way