These guys are not pioneers in this field, "realistic" black hole rendering was done many times before them. For example, a ring visible twice can be seen here

These guys are not pioneers in this field, "realistic" black hole rendering was done many times before them. For example, a ring visible twice can be seen here: http://www.spacetimetravel.org/filme/bsm1/bsm1-xe-640x480.mpg http://www.spacetimetravel.org/filme/bsm1/bsm1-xe-640x480.mp... Black hole warping light: http://jila.colorado.edu/~ajsh/insidebh/schw.html http://jila.colorado.edu/~ajsh/insidebh/schw.html Other relativistic renders: http://www.spacetimetravel.org/galerie/galerie.html http://www.spacetimetravel.org/galerie/galerie.html