Hey i was reading the "Technology Review" and just saw a viable justification for Auroras Geo-sensors.
The Article describes how you could "x-ray" earth by using Neutrinos and theyr unique properties. For the More scientific interested folks there is a
Paper on arXiv on this subject.
For those that go TL;DR here the short version:
Neutrino come in different flavors and can flip into them as they travel. The probability of flipping is a function of a) distance traveled and b) density of Matter traveled through. Because of this one could use a neutrino-beam like an X-ray beam in a CT.
The actual resolution isnt that high yet and you would need a 5K times stronger neutrino-source then available right now but it looks promising.
