The physical nature of light is an intriguing scientific mystery as it behaves like a wave in free space and as a particle ...

Dark matter, a type of matter that does not emit, absorb, or reflect light, is predicted to account for most of the ...

Key TakeawaysResearchers have built a compact X-ray free-electron laser (XFEL) using laser plasma accelerators to generate ...

Something is sending Earth a cosmic morse signals from far away - but not millions of light years beyond the cosmos ...

Lightning has captivated scientists for centuries, but despite extensive research, the precise atmospheric conditions that ...

Rainbows are often seen as symbols of luck, and if you spot one, consider yourself lucky. That’s because a few things need to align, both in terms of weather and physics: a little rain, some sunshine, ...

Gold usually melts at 1,300 kelvins—a temperature hotter than fresh lava from a volcano. The feat was completely unexpected ...

Using the Linac Coherent Light Source (LCLS) at SLAC National Accelerator Laboratory in California, the team blasted the ...

Watches are used to keep track of time, making sure we get to appointments when needed and help us make sense of our day. However, you do not need a watch or a clock to experience a timeframe commonly ...

Two studies fill in gaps about the cosmos’s ordinary matter. One maps it all, even the “missing matter.” The other details one of its hiding spots.