Distant galaxies ‘lift the veil’ on the end of the cosmic dark ages
Astronomers studying the distant universe have found that small star-forming galaxies were abundant when the universe was only 800 million years old, a few percent of its present age. The results suggest that the earliest galaxies, which illuminated and ionized the universe, formed at even earlier times.
A new record: Keck Observatory measures most distant galaxy
EGSY8p7 is the most distant confirmed galaxy whose spectrum obtained with the W. M. Keck Observatory places it at a redshift of 8.68, at a time when the universe was less than 600 million years old. Hydrogen emission from EGSY8p7 may indicate it is the first known example of an early generation of young galaxies emitting unusually strong radiation.