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I was playing with collisions of different kinds of gliders, circular and linear.

Here is two circular gliders (one which is using a 'even' cell, and the other an 'odd' cell)
in a collision, which results in the 'even' circular glider getting split into two linear gliders,
and the 'odd' circular ...

Here's an animation of the length 7 circular glider with translation

I found an interesting family of gliders based on one of the examples
in Dan Miller's BusyBoxes CA, which exhibits both circular motion and
translation:

The original glider was this one:

http://busyboxes.org/?hash=PB0jwU0vAB0
it is basically the circular motion configuration, and a single ...