Did Dark Matter Make The Early Universe Chill Out?
A new study suggests that the early universe got an unexpectedly cold start, and that dark matter may be to blame.
Scientists have probed a period of the universe's early history that no one has been able to explore before — and they got a surprise: It was far colder in the young universe, before the first stars blinked on, than astronomers previously thought.
What's more, that cosmic chill may have come from previously unknown interactions between normal matter and mysterious, so-called dark matter, according to two new reports in the journal Nature.
If so, it's the first time scientists have observed any effect
