Answer:
all of the above is correct edg
Explanation:
Answer:
1) Every planet's orbit is an ellipse with the sun at a focus.
2) A line joining the sun and a planet sweeps out equal areas in equal time(s)
3) The square of a planet's orbital period is proportional to the cube of semi major axis of it's orbit
He thought that they were moons
but it was actually the rings of the planet