The phrase "early galaxies" refers to the first galaxies that formed in the early universe. It describes the groups of stars, dust, and gas that came together billions of years ago, marking the beginning of galaxy formation. Full definition
This is a slow process and in the very earliest galaxies in the history of the universe, dust had not yet formed. (sciencedaily.com)
This will allow scientists to find possible habitable planets around other stars and determine how earlier galaxies were formed. (tmt.org)
If confirmed, the result could lead astronomers to reconsider the role dark matter played in early galaxy evolution and might also offer clues to how nearby elliptical galaxies evolved. (sciencenews.org)