The Living Force
Very interesting! in your experience @psychegram does this thing he says about this galactic energy sheet pan out? Does it even exist?
What about recurrent Novas or super flares? Could the Sun do this periodically (i.e. every 12000 - 14000 years) without it being widely known and available knowledge?
Another one, not sure if you'd know from your job - is the earth's magnetic field weakening?
A galactic current sheet isn't part of standard astrophysics, but its existence nevertheless seems very likely to me since there is in fact a large-scale, galactic magnetic field. You get a current sheet whenever you have a magnetic field that gets stretched open, such that opposite polarities come close to touching; for instance, the Sun has a current sheet that goes from just beyond the corona (where its magnetic field is opened by the wind) to the heliopause out beyond Pluto (where the solar magnetic field rejoins the interstellar medium).
Superflares aren't actually unexpected. Studies of solar twins - stars with similar mass and rotation period to the Sun - indicate that these do happen, and there's furthermore evidence of super-Carrington events in the geological record. Whether these can rise to the level of the sort of micronova Davidson talks about is another question. We've certainly never seen anything like that from a solar-type star. In general, when we see evidence of a nova, the central object is a white dwarf; a supernova, a neutron star (left over from an exploding massive star); and superflares tend to happen around M stars (much smaller, redder, more rapidly rotating, and therefore more magnetically active than the Sun, a G-type star). Certainly the Sun can probably have flares much stronger than those seen in recent history, but strong enough to be a near-extinction level event? I'm skeptical. Such an event would however certainly wipe out the electrical grid.
The geomagnetic field is unambiguously weakening and doing so quite rapidly. There is no doubt this poses dangers to e.g. the electrical grid, since our shields are going down, thus charged particles from solar flares and CMEs are able to penetrate closer to the Earth, which raises the risks of blackouts due to induced telluric currents. It also poses a threat to satellites. In other words, if the geomagnetic field gets weak enough, you don't even need super-Carrington, or even just Carrington level, events to do serious damage to our technological infrastructure.