Using X-ray lasers, researchers at Stockholm University have been able to determine the existence of a critical point in supercooled water at around -63 °C and 1,000 atmospheres. Ordinary water at ...

There are monstrous objects at the heart of every large galaxy — black holes that are millions or even billions of times more massive than the sun. And when these “supermassive” black holes start to ...

Picture of the experimental hall showing the target interaction chamber on the left, the collection vacuum tube and the detector on the right side. Credit: Gianluca Gregori. Researchers at the ...

Scientists may have solved the long-standing mystery of why ice floats and why liquid ...

Techniques that exploit the phase of X-rays, not just their absorption, have the potential to transform X-ray imaging in hospitals, reports Jude Dineley Improved imaging Marian Willner from the ...