article_snippet: Way not thought possible before.
article_snippet: The amazing discovery - led by Dr Denilso Camargo of the Federal University of Rio Grande do Sul in Porto Alegre
article_snippet: The theory proposed by the researchers from MIT and Michigan State University suggests a number of reasons for why this is so.
article_snippet: We've built a track that clusters follow,' Dr McDonald said. '
article_snippet: The nice, simple thing about this framework is that you're stuck in one of two modes, for a very long time, until something very catastrophic bumps you out, like a head-on collision with another cluster.'
article_snippet: Preliminary evidence, he says, suggests that is the case. '