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James Webb Space Telescope peers into the ‘ghostly light’ of interstellar space

The first deep field image of the cosmos taken by the James Webb Space Telescope (JWST) has allowed scientists to study the faint almost ghostly light from orphan stars that exist between galaxies in galactic clusters. 

Not gravitationally bound to galaxies, these stars are pulled free of their homes and drift into intergalactic space by the massive 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 possesses just one percent of the brightness of the darkest sky it is possible to see over Earth

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