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Book: Merlin's Tour of the Universe
Quotes of Book: Merlin's Tour of the Universe
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  1. Neil deGrasse Tyson _ Merlin's Tour of the Universe

    the only people who should have their head examined are those who never ask questions."
    book-quote

  2. Neil deGrasse Tyson _ Merlin's Tour of the Universe

    Suppose a hole were dug from one side of Earth, through the center, and out the other side. What would happen to a man if he jumped into the hole? When he got to the middle of the Earth would he keep falling or would he stop? DEBBIE CANDLER RED BUD, ILLINOIS He would be vaporized by the 11,000° Fahrenheit temperature of the pressurized molten iron core. Ignoring this complication, he would gain speed continuously from the moment he jumped into the hole until he reached the center of Earth where the force of gravity is zero. But he will be traveling so fast that he will overshoot the center and slow down continuously until he reached zero velocity at the exact moment he emerges on the other side. Unless somebody grabs him, he will fall back down the hole and repeat his journey indefinitely. A one-way trip through Earth would take about forty-five minutes.
    book-quote
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