Discovery of Universe's Oldest Stars Remnants.

Astronomers have discovered the remnants of some of the universe's oldest stars, which are over 13 billion years old, by studying the chemical signatures of three distant clouds of star-forming gas using the European Southern Observatory's Very Large Telescope. The clouds were found to be poor in iron and other metallic elements but rich in carbon, oxygen, and magnesium, which is what would have been left over after the first stars ran out of fuel and exploded. This discovery may help explain the composition of younger stars, including those found in the Milky Way.