Three Laws
This is the shape Kepler proposed for planetary orbits:
Ellipse
This term describes a planet's path around the sun:
Orbit
What orbit was believed before ellipses?
Perfect circles
Known as the law of periods
3'rd law
What is an ellipse (picture example)
???
Does a planet move faster or slower when closer to the sun?
Faster
The first law explains that the distance between a planet and the sun is constantly _________
Changing
This term describes half of the longest axis of an elliptical orbit:
Semi-Axis
What is Kepler most famous for?
His 3 laws / the heliocentric model
This law states that a line connecting a planet to the sun sweeps out equal areas in equal times:
2'nd law
This law means that the imaginary line connecting the planet to the sun covers the same amount of space regardless of the planet's position:
Law of Equal Areas (2'nd Law)
What were some of his titles
Physicist, Mathematician, Writer, Teacher, Cosmologist, Philosopher.