[ww520]

Someone traveled from the future doesn't want those calorimeters up there?

[desdiv]

Or aliens with cloaking ships that work in every spectrum except the X-ray one.

[bitL]

Or architects of the Simulation worrying X-ray spectrum could expose some dirty hacks they are ashamed of.

[serf]

or time-traveling alien cloaking simulation architects.

sorry, had to.