Prof. Michael Troxel and scientists on the Dark Energy Survey have been published in Physical Review Letters. Click here to read the accompanying article "Viewpoint: Dark Energy Faces Multiple Probes" and learn how they were able to verify and measure dark energy. Duke Research has a nice summary on their 1,100 Words gallery.
Photo credit: F. B. Abdalla et al., Mon. Not. R. Astron. Soc. 460, 1270 (2016)