Classical physical laws predict that atomic hydrogen may undergo a catalytic reaction with certain species, including itself, that can accept energy in integer multiples of the potential energy of atomic hydrogen, m.27.2 eV, wherein m is an integer. The predicted reaction involves a resonant, nonradiative energy transfer from otherwise stable atomic hydrogen to the catalyst capable of accepting the energy. The product is H(1/p), fractional Rydberg states of atomic hydrogen called "hydrino atoms," wherein n = 1/2, 1/3, 1/4, ..., 1/p ( p <= 137 is an integer) replaces the well-known parameter n = integer in the Rydberg equation for hydrogen excited states. Each hydrino state also comprises an electron, a proton, and a photon, but the field contribution from the photon increases the binding rather than decreasing it corresponding to energy desorption rather than absorption. Since the potential energy of atomic hydrogen is 27.2 eV, two H atoms formed from H(2) by collision with a third, hot H can act as a catalyst for this third H by accepting 2.27.2 eV from it. By the same mechanism, the collision of two hot H(2) provide 3H to serve as a catalyst of 3.27.2 eV for the fourth. Following the energy transfer to the catalyst an intermediate is formed having the radius of the H atom and a central field of 3 and 4 times the central field of a proton, respectively, due to the contribution of the photon of each intermediate. The radius is predicted to decrease as the electron undergoes radial acceleration to a stable state having a radius that is 1/3 (m = 2) or 1/4 (m = 3) the radius of the uncatalyzed hydrogen atom with the further release of 54.4 eV and 122.4 eV of energy, respectively. This energy emitted as a characteristic EUV continuum with a cutoff at 22.8 nm and 10.1 nm, respectively, was observed from pulsed hydrogen discharges. The continua spectra directly and indirectly match significant celestial observations. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.