A recent article in New Scientist offers us cosmology enthusiasts an exciting new possibility - evidence of another universe.  It seems that some recent measurements demonstrate that certain clusters of galaxies are moving in the same direction against background space, which violates the idea that the universe should be the same in all directions and instead implies a clump of excess density outside of our observational range.  Like another universe, maybe?

Also known as dark flow, the latest in the series of "dark" monikers, joining predecessors "matter" and "energy," scientists are baffled at its cause.  Just as Copernicus, Galileo, and Hubble were baffled before us.  70 years ago, Edwin Hubble said "At the last dim horizon, we search among ghostly errors of observations for landmarks that are scarcely more substantial. The search will continue. The urge is older than history. It is not satisfied and it will not be oppressed."

No surprise to us programmed realitists.  As long as our species is blissfully unaware of the big picture, the cosmic programmers must keep at least one step ahead of our best instrumentation and keep us fascinated with hints of what lurks just beyond our horizon.