A recent image from the Dark Energy Camera shows an act of galactic cannibalism, with a spiral galaxy similar to our Milky Way about to devour a nearby dwarf galaxy that has wandered into its path. The dramatic interaction is ...
Intriguingly, this kind of decoherence will occur anywhere there is a horizon that only allows information to travel in one direction, creating the potential for causality paradoxes. The edge of the known universe, called the cosmological horizon, is another example. ...
