Please forgive me as I am inquisitive enough to be dangerous. Question First, Thoughts Behind It: * How much validity is there in the application of Fleming's Left [edit: RIGHT!] Hand Rule towards the orbit of the Earth around the Sun? * I saw that NASA recognizes this but they seem to sort of shrug and say "meh". http://science.nasa.gov/science-news/science-at-nasa/2006/30nov_highorbit I can't help but notice that the earth's orbit appears to follow (as best i can tell) all the specific parts of Fleming's Left Hand Rule. Given that the planets and the sun are giant balls of metal moving through a medium with permittivity, is it not a valid assumption that the sun would put off a magnetic field at a right angle to it's motion of travel? In the laboratory when one is examining this phenomenon it is often suggested to hold a compass up around this field to observe the direction in which the needle points. How much resemblance does the "pointing" of the earth's axis have with this? Earth's orbit: One final question. Much is made of the "fact" that gravity only attracts, while the electrical and magnetic forces can also repel. But what would happen if we could flip the earth's poles? Is it not conceivable that there would then be a repulsion?