Start starts or continues a
Stop pauses a simulation.
Reset Initializes the simulation.
To Rotate around the x/y axes, click and drag inside
the viewport. To Zoom or Rotate
about the z-axis, hold the Shift key and drag inside the viewport.
Green Centered centers the view in on the
green (main) galaxy, and moves with it.
Friction turns on dynamical
friction, calculated using a Chandrasekhar-like analytic implementation.
This option will allow galaxies to merge.
You can change:
Peri: the distance of closest
approach [in kiloparsecs].
Red Galaxy mass: the mass of
the Red (companion) galaxy [in terms of the Green (main) galaxy's mass, ie 1=equal mass].
Galaxy theta, Galaxy phi: the
inclination and slew of the primary galaxy in the orbital plane [in degrees].
Companion theta, Companion phi: the
inclination and slew of the companion galaxy in the orbital plane [in degrees].
Number of Stars: the total number
of stars in the simulation, divided evenly between galaxies. The smaller the
number, the faster this applet will run; the bigger the number, the cooler the
simulation. That's life...