Molecular clouds, which are dense areas of gas and dust, are the birthplace of stars. Gravity pulls on material, drawing it ...

But scientists have debated for decades when this shift began. Some theories suggest that Earth’s crust was a single, rigid shell before it was shattered. A new study has uncovered the oldest evidence ...

A specially designed chamber that converts visible light into vacuum ultraviolet light in a new laser. (Credit: Kapteyn-Murnane Group) For decades, scientists have struggled to create lasers that ...