“One of the biggest differences between photons and atoms is that the latter are massive particles, making gravity is a huge factor. It can be seen as an advantage when designing new high accuracy atom interferometers based inertial sensors, but can be a major drawback when controlling atom laser beams.”
“China has fired high-power lasers at U.S. spy satellites flying over its territory in… a test of Chinese ability to blind the spacecraft,” Defense News is reporting. And, at least in theory, those lasers might be able temporarily take offline America’s most powerful orbiting spies, like the giant electro-optical Keyhole spacecraft..