Stars and telescopes; a hand-book of popular astronomy founded on the 9th ed. of Lynn's Celestial motions (1901)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911 · Boston, Little, Brown · leaf 350
Galileo applied groups. Whether these differences of spectra are due todifferent stages of stellar development, or whether they indi-cate real differences of constitution, is not yet known. Prob-ablv they are due to a combination of these causes. Accordingto Mr Espin, stars having the most bands in… … DOUBLE CLUSTER IN THE SWORD HILT OF PERSEUS {Photographed by Roberts, \T,th January 1890. Exposure, ■>, hours. This clusteris visible to the naked eye as a faint spot of light in the Milky IVay) In the case of a Aquilae, M. Deslandres, the able spectro-scopist of Paris, has discovered fine…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
