Phantom Energy and Cosmic Doomsday

  title={Phantom Energy and Cosmic Doomsday},
  author={Robert R. Caldwell and Marc Kamionkowski and Nevin N. Weinberg},
Cosmologists have long wondered whether the Universe will eventually re-collapse and end with a Big Crunch, or expand forever, becoming increasingly cold and empty. Recent evidence for a flat Universe, possibly with a cosmological constant or some other sort of negative-pressure dark energy, has suggested that our fate is the latter. However, the data may actually be pointing toward an astonishingly different cosmic end game. Here, we explore the consequences that follow if the dark energy is… 
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