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Science
Sara Webb, Postdoctoral Research Fellow, Centre for Astrophysics and Supercomputing, Swinburne University of Technology

A cosmic time machine: how the James Webb Space Telescope lets us see the first galaxies in the universe

Universe NASA Earth Hubble CSA ESA STScI
NASA/JWST

It has been an exciting week with the release of breathtaking photos of our Universe by the James Webb Space Telescope (JWST). Images such as the one below give us a chance to see faint distant galaxies as they were more than 13 billion years ago.

The SMACS 0723 deep field image was taken with only a 12.5-hour exposure. Faint galaxies in this image emitted this light more than 13 billion years ago. NASA, ESA, CSA, and STScI
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