Niobium found in planet orbiting white dwarf, thought to be "second generation" planet formed from the red giant phase remains.  #space #astronomy #astrophysics
<br /><a href='https://science.nasa.gov/missions/hubble/suspected-second-generation-planet-solves-nasa-hubble-cold-case/'>https://science.nasa.gov/missions/hubble/suspected-second-generation-planet-solves-nasa-hubble-cold-case/</a>