James Webb Space Telescope Sees ‘Ghostly’ Interstellar Light

Image of the intracluster light of the cluster SMACS-J0723.3-7327 obtained with the NIRCAM camera on board of JWST. The data have been processed by the IAC team to improve the detection of the faint light between the galaxies (black and white).
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The first deep-field image of the cosmos taken by the James Webb Space Telescope (JWST) has allowed scientists to study the dim, almost ghostly light of orphan stars that exist between galaxies in galaxy clusters.

Not being gravitationally bound to galaxies, these stars are released from their homes and drifted into intergalactic space by the enormous tidal forces generated between galaxies in clusters. The light emitted by these stellar orphans is called intracluster light, and it is so dim that it has only one percent of the brightness of the darkest sky that it is possible to see. Land.

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