Astronomers have identified a strange new object in deep space, a vast cloud that looks like a galaxy stripped of its stars.

A strange, starless cloud on the edge of a nearby galaxy is forcing astronomers to confront one of the biggest unknowns in ...

Moves are afoot to illuminate particles in flight with powerful X-ray bursts, to determine the structure of single molecules, viruses and nanoparticles. This would circumvent important limitations of ...