Scientists detect signal from ‘cosmic dawn,’ when stars first lit up the universe

[truebluefan]

For the first time, scientists have detected a signal from “cosmic dawn” — the moment when the universe's earliest stars emerged.

The signal, reported Wednesday in the journal Nature, is little more than a blip in the radio echo of that ancient era, as difficult to detect as the wingbeat of a hummingbird caught in a hurricane. But if confirmed, researchers say it can help explain the events that gave rise to the first stars, black holes, galaxies and, eventually, every other object in existence.

In a companion study, another scientist proposes that the unexpected size of the signal suggests it was influenced by dark matter — a potential new clue to one of the most persistent mysteries in the universe.

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