Orbits:
Kepler’s Laws 1 and 2
•1609 Published two laws showing:
–K1 Planets
orbit the sun in ellipses, with the Sun at one focus
–K2 Motion
is faster when they are near the Sun, in such a way
that a line from the planet to the sun sweeps out equal areas
in equal times
that a line from the planet to the sun sweeps out equal areas
in equal times
From Horizons, by Seeds