Date: 26 January 2017
Satellite: Hubble Space Telescope
Depicts: Lensed quasars
Copyright: ESA/Hubble, NASA, Suyu et al.

This montage shows the five lensed quasars and the foreground galaxies studied by the H0LiCOW collaboration. Using these objects astronomers were able to make an independent measurement of the Hubble constant. They calculated that the Universe is actually expanding faster than expected on the basis of our cosmological model.