At the center of a galaxy 10 billion light-years away, a supermassive black hole is the new record holder for brightest flare ...

NASA compares the universe's biggest black holes with "each other and to our solar system," in this Goddard Space Flight ...

What is a black hole? Black holes are among the most extreme objects in the universe, forming when a massive star collapses ...

A powerful burst of energy from the sun is streaming past Earth, disturbing energized particles in the highest levels of the ...

The current rate of star formation at the Galactic Center appears to be lower than in the rest of the Galaxy. A new study led ...

How fast and in what direction the solar system moves is a critical cosmology test. New research offers answers that ...

This global view of Jupiter's moon, Io, was obtained during the tenth orbit of Jupiter by NASA's Galileo spacecraft. Io, ...

Four lasers were directed into the skies above the European Southern Observatory's (ESO) Paranal facility in Chile. Each ...