Distant 'teenage galaxies' surprise astronomers with unexpected heavy elements 

 Significant amounts of nickel observed in galaxies only two-to-three billion years after the Big Bang. 

https://cdn.mos.cms.futurecdn.net/BymPihkWzKdsjV2mmLTSYk.jpg

https://www.space.com/teenage-galaxies-hotter-heavier-elements-nickel