They are called "barium stars" because of how much barium they contain. The stars were first discovered in 1951 when astronomers William P. Bidelman and Philip Keena noticed high levels of barium ...

The study, published in the journal Nature Astronomy, suggests that the discovery means that habitable planets could ... lithium and trace amounts of barium and boron. “Oxygen, forged in the hearts of ...

Twenty years ago this spring, they discovered that a crystalline compound of lanthanum, barium, copper and oxygen becomes superconducting at a temperature 12 K higher than any material known ...