Trauma alone doesn't cause posttraumatic stress disorder (PTSD); how we process and imagine it plays a key role, according to ...

Now imagine trying to create an impression of an invisible concept, such as dark matter. The idea of dark matter is difficult to understand and has no obvious sensory elements, yet we can use ...

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on amateur telescopes. Engineers and astronomers at the University of Utah have ...

This was Vladimir Putin’s offer to help Myanmar’s military regime improve its access to satellite imagery. This not only has obvious strategic implications, but it also has direct ...