How long before the Sun becomes a red giant star engulfing the Earth? Don't worry. Another five billion years. But how can we know that? Or how do we know that protons are made up of three quarks? How did a Stanford-NASA-Lockheed experiment show that the rotating Earth actually drags space itself around? Are we approaching a genuine limit to how fast a computer can operate? Science and its cousin technology are both exciting and mind boggling. Survey the landscape of experiments, theories and ideas that may open new vistas and stimulate your imagination.
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