Speaker
            
    Thomas Schucker
        
    Description
A
relativistic version of the cosmological principle is presented 
where
maximal symmetry is not postulated on surfaces of 
`simultaneity', but
rather on past light-cones. This principle is then confronted 
with
observational data: the Hubble diagram of supernovae, 
weak lensing,
CMB and BAO.  (joint work with Andre Tilquin)