[JasonC]

No, the fine structure constant isn't going to change. But it is perfectly believable the neutrino flux from all the nuclear reactions in the sun, slightly influences some sensitive decay rates, and varies with distance.

[Steely Tom]

I, too, first thought of solar neutrino flux.

[ETL]

it is perfectly believable the neutrino flux from all the nuclear reactions in the sun, slightly influences some sensitive decay rates, and varies with distance.

But neutrinos pass through matter without hardly ever interacting with it.

[JRandomFreeper]

To the level of observable changes in V1 and V2 spacecraft? They have radioisotope power supplies. Rather primitive, I might add... dis-similar metal junction generators?

Not my generation.

/johnny