Astronomers believe that the metal lithium was created during the Big Bang 13.8 billion years ago. Yet old stars often have less lithium than might be expected, while young stars seem to have much more. Some scientists have speculated the source of extra lithium in young stars may be stellar explosions, or novae, expelling matter into space. Now lithium has been found in material ejected by the younger star Nova Centauri 2013, which may confirm the theory. The observation was made by telescopes at La Silla Observatory, the European Southern Observatory’s site in Chile, and at the Observatory of the Pontificia Universidad Catolica de Chile near Santiago.