Bok
01-30-2013, 08:32 PM
Ground-based microwave telescopes determine masses of supermassive objects
More... (http://www.sciencenews.org/view/generic/id/347950/title/Scale_weighs_black_holes_better_than_before)
More... (http://www.sciencenews.org/view/generic/id/347950/title/Scale_weighs_black_holes_better_than_before)