Hypothesis of an expanding earth

The hypothesis of an expanding earth has never attracted notable support, and if it were not for the historical example of continental drift, such indifference might be legitimate response to an apparently improper concept. It should be remembered. However, that drift too was once regarded as illusory, but the idea was kept alive until evidence from physicists compelled geologists to reinterpret their data. Of course, it would be as dangerous to overreact to history by concluding that the majority must now be wrong about expansion as it would be to re-enact the response that greeted the suggestion that the continents had drifted. If physics could show that the earth’s gravitational force has decreased with time, expansion would have to be reconsidered and accommodated.