“Einstein's pioneer application in 1917 of his newly developed general relativity to the problem of world-structure ushered in a new phase in the theoretical approach to the subject. Then, some seven years later, Hubble's discovery of Cepheid variables in the Andromeda nebula finally settled the long-debated question concerning this and similar nebulae in the Milky Way.”
"Theories of the Universe" (10 Apr 1958)
Help us to complete the source, original and additional information
Gerald James Whitrow 39
British mathematician 1912–2000Related quotes
Source: Just a Theory: Exploring the Nature of Science (2005), Chapter 11, “Logic and Mathematics: Scientists Like It Clear and Precise” (p. 184)

Source: Investigations into the Method of the Social Sciences, 1883, p. 147
As quoted by Gerald James Whitrow, The Structure of the Universe: An Introduction to Cosmology (1949)

Adieu faux amour confondu
Avec la femme qui s'éloigne
Avec celle que j'ai perdue
L'année dernière en Allemagne
Et que je ne reverrai plus
Voie lactée ô sœur lumineuse
Des blancs ruisseaux de Chanaan
Et des corps blancs des amoureuses
Nageurs morts suivrons-nous d’ahan
Ton cours vers d'autres nébuleuses
"La Chanson du Mal-Aimé" (Song of the Poorly Loved), line 56; translation by William Meredith, from Francis Steegmuller Apollinaire: Poet Among the Painters (Harmondsworth: Penguin, 1973) p. 95.
Alcools (1912)
Source: Fritz Zwicky, [On the redshift of spectral lines through interstellar space, Proceedings of the National Academy of Sciences of the United States of America, 15, 10, 1929, 773–779, https://www.ncbi.nlm.nih.gov/pmc/articles/PMC522555/] (quote from p. 773)
Source: Jane McIntosh, The Ancient Indus Valley, 2008