Plutonium discovered at the bottom of the ocean was found to be refuse from a kilonova that exploded close to Earth 10 million years ago. Kilonovas occur when binary neutron stars spiral closer ...

was bee-busy making plutonium and its byproducts ... Could we go to war with a single atom bomb?” Even so, Dr. Mackenzie’s revelation meant that the U.S. was no longer the only nation in ...

Japan’s plutonium stockpiles in Britain and France totaled 21.8 tons and 15.4 tons, respectively, as of December 2020. Britain shut down its only M OX plant in 2011, which means it can no longer ...