Cosmological Theory
Cosmological Theory is a scholarly work, published in 1938 in ''Nature''. The main subjects of the publication include astrophysics, solar physics, physics, point, Doppler effect, cosmology, rest, Hubble–Lemaître law, history of astronomy, classical mechanics, and spacetime. ON the assumption that the red-shifts observed in the spectra of the extra-galactic nebulæ are due to a Doppler effect, Hubble's observations indicate that the nebulæ are receding from us with velocities proportional to their distance from us.