The oldest stars in the universe may be revealed with new technology

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

The technique, which is presented in a new paper, looks for a type of signature of electromagnetic radiation known as a 21cm line, emitted by hydrogen atoms that fill the young ones. Universe In hundreds of thousands of years after the great explosion.

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