Physics
How redshift colours our view of the history of the universe
Redshift makes objects at different distances appear in different hues – allowing us to reconstruct how dark matter and energy have shaped cosmic evolution
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Redshift makes objects at different distances appear in different hues – allowing us to reconstruct how dark matter and energy have shaped cosmic evolution
We've long thought that galaxies grew fat by devouring gas from a mesh of dark matter called the cosmic web – now we've seen it in action