Like others, the latest report suggests that some galaxies formed much earlier than once thought.
They both have problems describing the way that the galaxies formed.
The galaxy, therefore, may have formed at the same time as most other galaxies.
Hot dark matter cannot explain how individual galaxies formed from the big bang.
Scientists do not know why, how or when galaxies formed.
And when the galaxies had formed, they joined this new universe.
"About nine weeks from now, we could see galaxies form."
Some 300 million years later, stars and galaxies formed as well.
More mature galaxies typically form stars at a rate of only a few a year.
He is also interested in understanding how galaxies form and evolve.