"the solar system oscillates with a 60-year cycle due to the jupiter/saturn three-synodic cycle and to a jupiter/saturn beat tidal cycle...
"the solar system oscillates with a 60-year cycle due to the jupiter/saturn three-synodic cycle and to a jupiter/saturn beat tidal cycle...
year:130
the galactic year is the time it takes earth's solar system to revolve once around the galactic center.