“This is a short-lived nuclide that only exists in the early solar system,” says Noriko Kita, an expert in meteorite aging from the University of Wisconsin-Madison. That advanced vintage makes chondrules the second-oldest recognizable objects in our solar system, after calcium-aluminum-rich inclusions (CAIs), specks of white in meteorites that are thought to have formed one to three million years earlier by condensing out of the gas that surrounded our young sun.
Office of Strategic Communication