 
        
            The end of US support for the CMB-S4 telescope is devastating
The South Pole Telescope, which CMB-S4 would have used to measure variations in the temperature and polarisation of microwave light across most of the sky. Brad Benson, University of Chicago, Fermilab Robert Frost’s poem The Road Not Taken opens with “Two roads diverged in a yellow wood,/ And sorry I could not travel both”. These…



 
                         
                         
                         
                         
                         
                         
         
         
         
         
         
         
         
        