The earth was a planet in a Brown Dwarf star system, ... in a whole different galaxy. We call it the "Sagittarius galaxy" today even though it has been absorbed by the Milkyway... Look at a depiction of our (current) galaxy. That out of place spiral arm (called sagittarious) we are among several thousand stars in it. In fact, there is still no single visible star (with out scope) that was not from the original "dwarf galaxy". Think about that . Aside from our sun, not one star visible by the eye that was not from the Sag dwarf galaxy. A captured galaxy now just an arm of something larger. In the mix, Sag brown dwarf star captured by much greater mass "main sequence periodic star"... referred to as "sol". In short, maybe they are nuts, ...that said, they are also the only people with actual recorded history of it. Flip a coin