Euclid spots the oldest known quasars

Euclid's deep-sky observations have revealed the oldest quasars ever recorded, shining when the universe was just 670 million years old. These quasars, identified as bright galactic cores, date back to the universe's first billion years. This discovery provides a unique window into the early universe, helping astronomers understand the formation and evolution of galaxies and the first generation of stars. Such findings are crucial for piecing together the history of cosmic structures and the conditions that prevailed shortly after the Big Bang.