Using gravitational lensing, astronomers have detected radio signals from the most distant galaxies ever seen. Gravitational lensing amplifies signals from distant galaxies so that they can be detected by Earth-based telescopes. The signal comes from the star-forming galaxy SDSSJ0826+5630, emitted when our universe was only 4.9 billion years old, 8.8 billion years ago. The Giant Metrewave radio telescope in India detected the signal at a wavelength along the hydrogen line. The study was published in the journal Monthly Notices of the Royal Astronomical Society.
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