But, not all galaxies are created equal, it seems, as astronomers have discovered what they believe is a “dark galaxy,” a galaxy that doesn’t give off visible light. In most cases ...

New research suggests that they could hold giant "dark stars," or invisible clumps of matter. Most of the mass in any galaxy is invisible, so astronomers do not yet know the identity of the dark ...

Most of them are solitary. In this new work, we show how to effectively double the number of pulsars we can use to constrain dark matter in the galaxy by rigorously using solitary pulsars to ...

Their updated results, taken with other measurements — exploding stars, leftover light from the young universe and distortions in galaxy shape — support the idea presented last year that dark ...