Science: Lunar Approach

Imaginative scientists have cold-bloodedly figured out a number of ways in which the world may come to an end. One of the remotest is thermodynamic equilibrium ("heat-death") of the whole universe. Another which may be only a few billion years off is freezing due to solar exhaustion. One which might happen any day is incineration of Earth by the sun's blowing up as a nova or "new star." Last week in London a less familiar world-finish was suggested before the Royal Institution by Sir James Hopwood Jeans, whose popular appeal derives in...

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