Since Charles Darwin's time, scientists have speculated that the solid Earth might be expanding or contracting. That was the prevailing belief, until scientists developed the theory of plate tectonics, which explained the large-scale motions of Earth's lithosphere, or outermost shell. Even with the acceptance of plate tectonics half a century ago, some Earth and space scientists have continued to speculate on Earth's possible expansion or contraction on various scientific grounds.
Now a new NASA study, published recently in Geophysical Research Letters, has essentially laid those speculations to rest. Using a cadre of space measurement tools and a new data calculation technique, the team detected no statistically significant expansion of the solid Earth.
NASA Research Confirms it’s a Small World, After All | NASA
Expanding Earth debunked - video
Expanding Earth theory debunked - articles and evidence
Expanding Earth hypothesis (rationalwiki.org)
EXPANDING EARTH? by Bill Mundy, Professor of Physics, Pacific Union College, California, has sections with problems for an Expanding Earth and also Plate Tectonics.
The unlikelihood of an expanding Earth (link to PDF) by A Hallam, Department of Geological Sciences, University of Birmingham, that investigates Lester C King's Wandering Continents and Spreading Sea-floors on an Expanding Earth and H G Owen's Atlas of Continental Displacement, 200 Million Years to the Present.