TV Program Description
Supermassive black holes, like the one hidden by a girdle of dust in this artist's impression, have the mass of up to a billion suns. They may lie at the heart of most, if not all, large galaxies.
Supermassive black holes, like the one hidden by a girdle of dust in this artist's impression, have the mass of up to a billion suns. They may lie at the heart of most, if not all, large galaxies.