The oldest stars in the universe could be revealed thanks to a new technique

The oldest stars in the universe could be revealed thanks to a new technique

Astronomers believe a new observation technique that relies on detecting weak radio signals will allow them to see the first stars that formed amid thick clouds of hydrogen shortly after the birth of the universe.

The technique, presented in a new paper, looks for a type of electromagnetic radiation signature known as the 21-centimeter line, which was emitted by hydrogen atoms that filled the young universe in the first hundreds of thousands of years after the big Bang.

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