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“A single shredded star can form hundreds of these planet-mass objects. We wondered: Where do they end up? How close do they come to us? We developed a computer code to answer those questions,” says lead author Eden Girma, an undergraduate student at Harvard University and a member of the Banneker/Aztlan Institute.
“Other galaxies like Andromeda are shooting these ‘spitballs’ at us all the time,” says co-author James Guillochon of the Harvard-Smithsonian Center for Astrophysics (CfA).
“Only about one out of a thousand free-floating planets will be one of these second-generation oddballs,” adds Girma.