About 12.4 billion light-years from Earth lies a collection of galaxies that could end up as the most massive structure in the universe.
An international group of astronomers, including researchers from Dalhousie University and the University of Victoria, found the cluster using the South Pole Telescope in Antarctica. The telescope doesn’t observe in optical light but rather in short wavelengths called submillimetre and millimetre. This allows it to peer into dark clouds and delve deeper into star formation and into the earliest time in our universe.
The team found a particularly bright source and followed up using telescopes in Chile. Their observations revealed that one source, dubbed SPT2349-56, is giving birth to galaxies — 14 that they observed — at
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