4 ms·
Blog post: http://terrytao.wordpress.com/2010/10/10/the-cosmic-distance-ladder-ver-4-1/ http://terrytao.wordpress.com/2010/10/10/the-cosmic-distance...
by giu 16y ago
Blog post: http://terrytao.wordpress.com/2010/10/10/the-cosmic-distance-ladder-ver-4-1/ http://terrytao.wordpress.com/2010/10/10/the-cosmic-distance...