A lighthouse galaxy sparkles unexpectedly through cosmic dawn fog

Modern monuments provides a snapshot of the universe after its formation in the heavy hot pin from the Big Bang, which occurred about 13.8 billion years ago. Cosmic microwave background measurements, emitted after about 300,000 years of this event, depicted cosmos filled with hot hydrogen and helium gas almost uniform and temperature¹¹. But 300 million years or so from cosmic history is still shattered. This “cosmic dawn” is a decisive period, as the universe began and cooled, and the stars, galaxies and black holes began to appear and grow almost from homogeneous gas. Writing in natureTo find out And others.² Note that the ultraviolet light from a galaxy was reported when the universe was only 330 million years old – a discovery that might require cosmologists to reconsider some aspects of early cosmic history.