[PDF] Black holes, wormholes - NRC Publications Archive

  • Is it possible that black holes are wormholes?

    The short answer is probably not, though the mathematics of the universe doesn't quite rule it out.
    By themselves, the only thing at the center of a black hole is a singularity — a point of infinite density.
    In theory, however, a black hole may be paired with a mirror twin, called a white hole, to form a wormhole.

  • How do we know black holes aren't wormholes?

    The main difference is that no object can theoretically come back out after crossing a black hole's event horizon — the threshold where the speed needed to escape the black hole's gravitational pull exceeds the speed of light — whereas any body entering a wormhole could theoretically reverse course.

  • Are black holes and wormholes similar?

    The major distinction between a wormhole and a black hole is that a wormhole is a funnel-shaped space-time tunnel between two points between universes, whereas a black hole is a cosmic body with extreme gravity from which nothing can escape.

  • Are black holes and wormholes similar?

    Certain solutions of general relativity allow for the existence of wormholes where the mouth of each is a black hole.
    However, a naturally occurring black hole, formed by the collapse of a dying star, does not by itself create a wormhole.

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