Astronomers scan 340,000 stars to find Sun's 'lost siblings'

A group of Australian-led astronomers has revealed the "DNA" of over 340,000 Milky Way stars to search for "lost siblings" of the Sun, now scattered across the sky. The "DNA" refers to the chemical composition of stars, showing astronomers how the Universe evolved from having only hydrogen and helium to the present day elements on Earth necessary for life.