For most of our evolutionary history, human activity has been linked to daylight. Technology has liberated us from these ancient sleep-wake cycles, but there is evidence sunlight has left and continues to leave its mark. Not only do we still tend to be awake in the daytime and sleep at night, we can thank light […]
NASA’s IXPE (Imaging X-ray Polarimetry Explorer) has helped astronomers better understand the shapes of structures essential to a black hole – specifically, the disk of material swirling around it, and the shifting plasma region called the corona. The stellar-mass black hole, part of the binary system Swift J1727.8-1613, was discovered in the summer of 2023 […]
Countries, including the US, specify the need for human operators to “exercise appropriate levels of human judgment over the use of force” when operating autonomous weapon systems. In some instances, operators can visually verify targets before authorizing strikes and can “wave off” attacks if situations change. AI is already being used to support military targeting. […]
