elements

Two astronomers think they’ve pinpointed the ancient stellar collision that gave our solar system its cache of precious gold and platinum — some of it, anyway. In a new study published May 1 in the journal Nature, the duo analyzed the remnants of radioactive isotopes, or versions of molecules with different numbers of neutrons, in a very old meteorite. Then, they compared those values with isotope ratios produced by a computer simulation of neutron star mergers — cataclysmic stellar collisions that can cause ripples in the fabric of space-time. The researchers found that a single neutron star collision, starting about … Read more