How are Kepler's Law important to astronomy?

M

Michael S

New member
why do we need the law? what is their purpose? how are they used today?

I am just trying to understand the law and why they are important to this field.
 
There are three laws of planetary motion, not one. All of orbital/celestial mechanics, like sending probes to every single planet, including Pluto, is based on Kepler's three laws of planetary motion, which preceded Newton's "Principia". Newton stated that Kepler's laws conformed and confirmed his three laws of motion.
 
Kepler's laws are important because they are the rules of our solar system. Rules that are always true. They're important because you can use his laws to figure out other things within our universe.
 
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