An international team of astronomers has discovered the oldest stars ever seen, dating from before the Milky Way Galaxy formed, when the Universe was just 300 million years old. Chemical makeup of the oldest stars in the Milky Way points to huge explosions called hypernovae. Image credit: ESO. “These stars formed before the Milky Way, and the galaxy formed around them. These pristine stars are among the oldest surviving stars in the Universe, and...
