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Unveiling the Edge of Time : Black Holes, White Holes, Worm Holes
Unveiling the Edge of Time Black Holes White Holes Worm Holes Author:John Gribbin Acclaimed science writer John Gribbin recounts dramatic stories that have led scientists to believe black holes and their more mysterious kin are not only real, but might actually provide a passage to other universes and travel through time. 56 line drawings.