Oxygen Presence in Distant Galaxy Sheds Light on Early Universe

After detecting a whiff of oxygen, astronomers have determined that stars in a faraway galaxy formed 250 million years after the Big Bang -- a rather short time in cosmic terms -- in a finding that sheds light on conditions in the early universe. Their research, published on Wednesday, provides insight into star formation in perhaps the most distant galaxy ever observed. The scientists viewed the galaxy, called MACS1149-JD1, as it existed roughly 550 million years after the Big Bang,...

© La Voix de l'Amérique - mercredi 16 mai 2018