Primitive star could shed light on the dawn of the universe

On the fringes of the Milky Way, near a satellite galaxy called the Large Magellanic Cloud, researchers have discovered the most metal-poor, chemically primitive star ever found, according to new research.

Composed primarily of hydrogen and helium and containing less than 0.005% of the metals in the sun, the chemical makeup of the star SDSS J0715-7334 is the closest analog yet found to the first stars that formed in our universe.

“These pristine stars are windows...