July 1937 Issue [Article] The riddle of our reddening skies Adjust Share by George W. (George William) Gray, This article is only available as a PDF to subscribers. Download PDF Tags 20th century Astronomical photography Astrophysics Expanding universe Red shift Research United States More from George W. (George William) Gray Which scientists win Nobel prizes? New discoveries about the cosmos Stars forming, burning, and dying (part II) New discoveries about the birth, life, and death of the sun and other stars This hydrogen universe (part I) Adjust Share