Researchers discover collisionless shock waves as cosmic engines accelerating subatomic particles in space to extreme speeds.

A bow shock is a shockwave that forms when fast-moving solar wind abruptly slows down and heats up as it encounters Earth’s magnetosphere. It is called a bow shock because it resembles the wave ...

The sun is about to enter the Northern Hemisphere, which means some stunning auroras may be visible in the coming weeks. At ...