We might be made of matter that didn't originate in the Milky Way

Ever wonder what you're made of? Is Earth, and by extension humanity, built of matter that collected here after the big bang, or are our origins much more complicated? Our little Solar System tucked away between the massive arms of the Milky Way galaxy might not have the origins that scientists have long assumed, and new research suggests that an untold amount of matter in our home galaxy might not have originated here at all. The research, carried out by astrophysicists at Northwestern Universi...