I finally got to a space egg after just dropping things in the same spot for awhile, and letting the jiiter that builds up knock everything together. once I got the one space egg, getting the second was pretty easy, because gameover became impossible, and the expansion and contraction caused even more jitter
Edit: Forgot to mention, sometimes the jitter will push eggs out of the map. I don't think they end up lost forever though, because I saw an egg randomly appear awhile later, but ultimately this just helps with getting the space egg too.