galaxy disk as seen from a location similar to the Sun
Amanda LaPages's movie of a precessing eccentric hole
Planet migration through a self-gravitating
Alex's simulation of two planets migrating in a disk of
10^4 planetesimals. All force pairs are computed.
The x-axis is semi-major axis;
the y-axis the eccentricity.
The integrator works
in democratic heliocentric coordinates so that Pluto sized
planetsimal masses can be integrated in single precision floating point.
This ran in about 6 hours.