The great Russian physicist and Nobel laureate Lev Landau once remarked that "cosmologists are often in error, but never in ...

The team at the National Institute of Standards and Technology publishes measurement data crucial for advanced research in ...

X-rays are radiated by matter hotter than one million Kelvin, and high-resolution X-ray spectroscopy can tell us about the composition of the matter and how fast and in what direction it is moving.