Traces of radioactive iron from the ocean floor, Antartica and the Moon reveal several waves of dust from distant stars over the past 10 million years.
Picture of the Sun taken by the SOHO space telescope.
NASA/ESA
People long assumed all the elements we see now were created during the Big Bang. But on May 2, 1952, an astronomer reported spotting new elements coming from an old star and changed our origin story.