•All planets orbit in almost the same
plane (ecliptic,
AKA Zodiac)
•Almost all motion is counterclockwise as
seen from the
north:
–All planets orbit in this direction
–*Almost* all planets spin in same
direction
•with axes more-or-less perpendicular to
ecliptic
–Regular moons (like Galilean satellites
and our own
moon) orbit in this direction too
•Planets are regularly spaced
–steps increasing as we go outward