This Is How Light May Have Escaped from the Earliest Galaxies, Turning the Universe Transparent

The first stars are commonly known as Population III stars. Forty or more years ago, astronomers thought many Population III stars would still be observable, some or many would likely be small stars like red dwarfs. Later after searching for the Population III stars, stellar evolution models were modified to allow for very large stars like perhaps 100-300 solar mass Population III stars so the universe can emerge from the dark age(s). Astronomers today will not see the very large, massive Population III stars - they exploded :)
 
FYI. I read reports that the first stars were made out of dark matter, thus dark matter stars. How light came from those dark matter stars I do not know :) In the inflation model of the Big Bang, magnetic monopoles are created, as abundant as hydrogen, and stable too. Alan Guth reported this in May 1984, Scientific American on the Inflationary Universe. Perhaps the first stars were chiefly composed of magnetic monopoles. The primordial universe is always interesting to explore.