Another explanation, which would fit with current developments, might be that these are computer-generated artifacts. Increasingly, the picture we are being sh

Another explanation, which would fit with current developments, might be that these are computer-generated artifacts. Increasingly, the picture we are being shown is generated by processing raw sensor data - for example, just compare raw (or partially processed) weather radar data to the processed maps you see in forecasts. Two recent trends -- the synthesis of views from multiple sensors of different types, and their presentation as virtual reality -- have come together in devices such as the F-35 Helmet-Mounted Display [1]. I would guess that this level of interpretation of data and synthesis of images presents an increased scope for artifact generation, and the presentation makes it seem more real. [1] https://www.f35.com/about/capabilities/helmet https://www.f35.com/about/capabilities/helmet