HydrogenEpochofReionizationArray
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HERA telescope upgrades could reveal the earliest stars
When it first went online in February 2016, the Hydrogen Epoch of Reionization Array (HERA) radio telescope in South Africa boasted 19, 42-foot-diameter antennas aimed at the "Cosmic Dawn" of the universe. The antennas are designed to detect a specific wavelength of light emitted by hydrogen atoms during what's called the "Epoch of Reionization," which scientists believe started about 400 million years after the Big Bang. By picking up these wavelengths of light, HERA will be able to form a clearer picture of the universe at a time when the first stars and galaxies were being formed, more than 13.7 billion years ago.
