Human spaceflight is once again confronting a familiar problem: how to protect astronauts during long missions far beyond ...

Almost all galaxies hold concealed monstrous black holes in their centers. Researchers have known for a long time that the more massive the galaxy is, the more massive the central black hole is. This ...

Astronomers have found that the vast doughnut-shaped clouds that surround supermassive black holes at the centre of galaxies are lumpy and irregular, rather than smoothly formed. But the reasons for ...

Supermassive black holes sit in the centers of all massive galaxies. Many of these giants are actively accreting material, earning them the name active galactic nuclei or AGN. As material falls in ...

This massive astral power tower just won the 2010 Moon Capital International Design Challenge. Designed by Bryna Anderson, a graduate student from Columbia University, the concept is based on American ...

High resolution observations show a rotating dusty gas torus around an active supermassive black hole. The existence of such rotating donuts-shape structures was first suggested decades ago, but this ...