Millot and colleagues squeezed a mixture of hydrogen and helium between two diamonds and hit the concoction with a powerful laser to compress it even further. As the pressure and temperature ...

Helium cadmium (HeCd) lasers are no exception, and they provide a number of specific dangers beyond the laser output. When in use, the laser tube will become hot enough to burn skin and must not be ...

A launch of a SpaceX Falcon 9 rocket was scrubbed on Sunday due to a helium leak ... Its upper stage had a problem with a final deorbit burn, leading to the Falcon 9 being grounded for two ...