The Nancy Grace Roman Space Telescope, set to survey the sky following its launch, will turn up hundreds of gravitational lenses where a massive galaxy in the foreground magnifies and distorts light from the background galaxy into arcs and swoops. Researchers will use Roman's data to measure tiny deviations in the repeated imagery of the background galaxies, which will help them measure the effects of dark matter on incredibly small scales and better pinpoint what it is.NASA's Roman to Peer Into Cosmic 'Lenses' to Better Define Dark Matter
June 19, 2025
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The Nancy Grace Roman Space Telescope, set to survey the sky following its launch, will turn up hundreds of gravitational lenses where a massive galaxy in the foreground magnifies and distorts light from the background galaxy into arcs and swoops. Researchers will use Roman's data to measure tiny deviations in the repeated imagery of the background galaxies, which will help them measure the effects of dark matter on incredibly small scales and better pinpoint what it is.
