I went back 15 pages and couldn't see this answered so apologies if redundant.
I get the colliding with an asteroid, stopping on an asteroid, etc.. What I'm confused about is bumping another base vs. moving through a player. The rules book shows an example of what looks like moving through a player where the base would have been outside the other player's base but they then they position it as if it was a bump. so when exactly is it a collision and when exactly is it moving through another player? Thanks.