How we arrived at our current model of the solar system?

What are the two method to separate insoluble impurities from water? What happens to the angle of declination when you are closer to the poles? What do Al and Pb elements have in common? What does the larynx look like? Why is it necessary to express atomic mass of elements against a standard? How is the model not like an electric circuit? What is the layer of the earth that ranges from 4000 to 9000 degrees? What is true about all the isotopes of an element? What is half a pint of milk in metric? Are there ways to make your teeth chatter? Where can you find a list of satellites launched by russia? What is the smallest grass? Which river is the world's busiest waterway? What time is it on the east coast? In what way does the shape of molecule affect how the molecule is involved with living systems? How many days did hurricane sandy last? What do you need to do if tsunamis occur? What is a human polity? What does pressure differences cause? When two individuals come together to form a a new organism what is this process called?