slide 1
history
slide 2
orbits
slide 3
orbits
slide 4
retrograde
slide 5
retrograde
slide 6
retrograde
slide 7
orbits
slide 8
Ptolemy
slide 9
Ptolemy
slide 10
Copernicus
slide 11
Ptolemy
slide 12
Kepler
slide 13
Tycho
slide 14
Kepler's laws
slide 15
ellipses
slide 16
ellipses
slide 17
conic sections
slide 18
ellipses
slide 19
ellipses
slide 20
equal area
slide 21
Galileo
slide 22
Venus' phases
slide 23
Venus' phases
slide 24
Newton's laws
slide 25
gravity
slide 26
satellites
slide 27
orbits
slide 28
escape velocity
slide 29
orbits