JWST imaging of the RPS galaxy C26 in SPT2349–56. (a) Red-green-blue image of the protocluster core (blue: NIRCam/F200W; green: NIRCam/F444W; red: MIRI/F1000W). The RPS galaxy C26 is marked by the red rectangle. The cross labels the kinematic center of the protocluster. (b–d) Zoomed images of C26 in F200W, F444W, and F1000W, respectively. credit: DOI: https://doi.org/10.48550/arXiv.2606.18229
Astronomers have spotted many “red and dead” galaxies in the early universe. These are massive systems that stopped forming stars surprisingly early in cosmic history. Now, they may have found evidence of one in the act of becoming dead: a massive galaxy being stripped of its starforming gas just 1.4 billion years after the Big Bang...
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