Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

The researchers found 68 articles that analyzed theoretical aspects of consciousness and that were published between 2007 and ...

Northern lights were reported across mid-latitudes, with sightings stretching from Germany to the southwestern United States, ...

Collective behavior is an unusual phenomenon in condensed-matter physics. When quantum spins interact together as a system, ...