The Dark Energy Camera captures the light and locations of the 17,000 galaxy clusters scientists needed to observe gravitational lensing of cosmic-microwave-background light by galaxy clusters. Photo: Reidar Hahn, Fermilab
January 8, 2020
The Dark Energy Camera captures the light and locations of the 17,000 galaxy clusters scientists needed to observe gravitational lensing of cosmic-microwave-background light by galaxy clusters. Photo: Reidar Hahn, Fermilab