Bizarre two-faced white dwarf star defies explanation
The ingredients in stars are usually pretty evenly mixed throughout, but now astronomers have discovered a bizarre star with two distinct faces, each made of a different element, which defies explanation.White dwarfs are the burnt-out husks that remain after stars like our Sun throw off their outer layers and leave just a compact core behind. Their atmospheres are usually dominated by either hydrogen or helium, with the main element present at levels about 1,000 times greater than the others.But now, astronomers have…