Hints of Early Stars May Have Been Found

From an Associated Press story:

Researchers from NASA’s Goddard Space Flight Center in Maryland believe they have captured traces of radiation from long-extinguished stars that were “born” during the universe’s infancy.

The research represents the first tangible — but not conclusive — evidence of these earliest stars, which are thought to have produced the raw materials from which future stars, including our sun, were created.

The Big Bang, the explosion believed to have created the universe, is thought to have occurred 13.7 billion years ago. About 100 million years later, hydrogen atoms began to merge and ignite, creating brightly burning stars. Just what these stars were like wasn’t clear.  *  *  *

If the team’s conclusions are correct, the study will advance understanding of how the universe originally lit up.

Avi Loeb, a Harvard astronomy professor who was not involved in the research, said the early universe was probably dark for half a million years. Later, hydrogen coalesced into brightly burning stars that were hundreds to a million times more massive than the sun, and these are the stars whose fingerprints Kashlinsky’s team hopes it has found.