John Gribbin - White Holes.pdf

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John Gribbin: White Holes
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White Holes: Cosmic Gushers in the Universe
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John Gribbin ElecBook
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White Holes: Cosmic Gushers in the Universe
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John Gribbin ElecBook
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White Holes: Cosmic Gushers in the Universe
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John Gribbin ElecBook
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INTRODUCTION:
Astronomical Tigers and Sheep
hings are not as they seem in the jungle of our Universe. There,
where every shadow contains some mysterious tiger (not always
burning bright); astronomers must struggle with the inadequacy of
their senses, supported by the props of electronic equipment, to fathom
just what immortal hand or eye did shape the cosmos.
To most people (and to many astronomers still) the Universe seems
to be a glorious puzzle of more or less constant phenomena that can be
observed in turn until sufficient pieces are gathered and the overall
picture emerges. The stars and galaxies, for example, are simply there,
waiting to be observed, changing little in the human world view. But
this simple approach is rapidly becoming out of date. The first
indications from relativity theory that everything is connected to
everything else—that the overall structure of the Universe is as im-
portant as the details—have now evolved into paradigms for a new
world view. But within this new framework the problems of explaining
simple observations loom almost as large as before.
Philosophers have long argued the question of how far man can trust
his senses. A tale is told of two men walking in the countryside who
observe some sheep grazing on a distant hill. “Ah,” says the first, “I see
those sheep have been sheared recently.” The other, more cautious, re-
plies, “It certainly seems so, from this side.” Real life experience tells us
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