The Earth-orbiting Solar Dynamics Observatory takes spectacular portraits of the sun, like this ultraviolet ... sitting close to a campfire, and the air on your face was a hundred times hotter ...

Both probes have departed the heliosphere, the vast magnetic bubble created by the sun and surrounding our solar system. They are now just outside the heliopause, the boundary marking the end of ...

The air quality in many Polish towns currently leaves much to be desired, and the phrase ‘to spend time out in the fresh air’ sounds increasingly archaic. In the past, however, aerotherapy – or ...