Black holes might effect Earth

                                                         Merging black holes could have radiated Earth during Middle Ages

In Salt Lake City, Radiation was found in the rings of a tree. The radiation in the tree was a result of two merging black holes. The tree was in it's middle ages. Black holes in the Milky Way are coiled up, it causes radiation to be found in trees and ice. I think this is important because the radiation could kill us. If you would like to learn more click here!