Exactly 101 years ago, German scientist—Alfred Lothar Wegener, sailed against the prevailing wisdom of his day when he posited that not only have the Earth’s continental plates receded from each other over the course of the Earth’s history, but that they are currently in a state of motion relative to one another. To explain this, Wegener set forth the hypothesis that the Earth must be expanding as a whole. Wegener’s inability to provide an adequate explanation of the forces and energy source responsible for continental drift and the prevailing belief that the Earth was a rigid solid body resulted in the acrimonious dismissal of his theories. Today, that the continents are receding from each other is no longer a point of debate but a sacrosanct pillar of modern geology and geophysics. What is debatable is the energy source driving this phenomenon. An expanding Earth hypothesis is currently an idea that is not accepted on a general consensus level. Antiproponent of the expanding Earth mercilessly dismiss it as a pseudo or fringe science with their main point of rejection being the energy source to power this supposed expansion. Be that asit may, we show herein that from the well accepted law of conversation of spin angular momentum, Stephenson ’s result that over the last 2700 years or so, the length of the Earth’s day has undergone a change of about +17.00 μs/yr, this result invariably leads to the plausibility the Earth may very be expanding radially at a paltry rate of about +0.60 mm/yr. If correct, this simple fact, automatically move the expanding Earth hypothesis from the realm of pseudo or fringe science, to that of plausible science.
 Stephenson, F.R. and Morrison, L.V. (1995) Long-Term Fluctuations in the Earth’s Rotation: 700 BC to AD 1990. Philosophical Transactions of the Royal Society A, 351, 165-202.
 Wegener, A.L. (1912) Die Entstehung der Kontinente. Geologische Rundschau, 3, 276-292. http://dx.doi.org/10.1007/BF02202896
 Stephenson, F.R. (1997) Historical Eclipses and Earth’s Rotation. Cambridge University Press, Cambridge. http://dx.doi.org/10.1017/CBO9780511525186
 Romm, J. (1994) A New Forerunner for Continental Drift. Nature, 367, 407-408.
 Carey, S.W. (1975) The Expanding Earth—An Essay Review. Earth Science Reviews, 11, 105-143. http://dx.doi.org/10.1016/0012-8252(75)90097-5
 Creer, K.M. (1965) An Expanding Earth. Nature, 205, 539-544. http://dx.doi.org/10.1038/205539a0
 Ward, M.A. (1963) On Detecting Changes in the Earth’s Radius. Geophysical Journal of the Royal Astronomical Society, 8, 217-225. http://dx.doi.org/10.1111/j.1365-246X.1963.tb06285.x
 Cox, A. and Doell, V.R. (1961) Paleomagnetic Evidence Relevant to a Change in the Earth’s Radius. Nature, 189, 45. http://dx.doi.org/10.1038/189045a0
 Egyed, L. (1961) Palaeomagnetism and the Ancient Radii of the Earth. Nature, 190, 1097-1098. http://dx.doi.org/10.1038/1901097a0
 Heezen, B.C. (1960) The Rift in the Ocean Floor. Scientific American, 203, 98-110.