The James Webb Space Telescope has glimpsed the smallest galaxy outside our local universe – and it is a thousand times less massive than the Milky Way
NASA/ESA/J. Jee /J. Hughes /F. Menanteau /C. Sifon /R. Mandelbum /L. Barrientos /K. Ng
The James Webb Space Telescope has spotted the smallest galaxy outside our local universe by using the heaviest known cluster of galaxies,El Gordo was first discovered in 2011. Follow-up measurements found it contained so much mass – the equivalent of 3 million billion suns – that it was at the very limit of what standard cosmological theory predicts. This huge mass makes it useful as a …
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