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- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium abstract "Timeline of knowledge about the interstellar medium and intergalactic medium 1848 — Lord Rosse studies M1 and names it the Crab Nebula 1864 — William Huggins studies the spectrum of the Orion Nebula and shows that it is a cloud of gas 1927 — Ira Bowen explains unidentified spectral lines from space as forbidden transition lines 1930 — Robert Trumpler discovers absorption by interstellar dust by comparing the angular sizes and brightnesses of globular clusters 1944 — Hendrik van de Hulst predicts the 21 cm hyperfine line of neutral interstellar hydrogen 1951 — Harold I. Ewen and Edward Purcell observe the 21 cm hyperfine line of neutral interstellar hydrogen 1956 — Lyman Spitzer predicts coronal gas around the Milky Way 1965 — James Gunn and Bruce Peterson use observations of the relatively low absorption of the blue component of the Lyman-alpha line from 3C9 to strongly constrain the density and ionization state of the intergalactic medium 1969 — Lewis Snyder, David Buhl, Ben Zuckerman, and Patrick Palmer find interstellar formaldehyde 1970 — Arno Penzias and Robert Wilson find interstellar carbon monoxide 1970 — George Carruthers observes molecular hydrogen in space 1977 — Christopher McKee and Jeremiah Ostriker propose a three component theory of the interstellar medium 1990 — Foreground "contamination" data from the COBE spacecraft provides the first all-sky map of the ISM in microwave bands.↑ ↑ ↑".
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium wikiPageID "58934".
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium wikiPageRevisionID "593193071".
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium hasPhotoCollection Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium.
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium subject Category:Astrochemistry.
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium subject Category:Astronomy_timelines.
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium comment "Timeline of knowledge about the interstellar medium and intergalactic medium 1848 — Lord Rosse studies M1 and names it the Crab Nebula 1864 — William Huggins studies the spectrum of the Orion Nebula and shows that it is a cloud of gas 1927 — Ira Bowen explains unidentified spectral lines from space as forbidden transition lines 1930 — Robert Trumpler discovers absorption by interstellar dust by comparing the angular sizes and brightnesses of globular clusters 1944 — Hendrik van de Hulst predicts the 21 cm hyperfine line of neutral interstellar hydrogen 1951 — Harold I. ".
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium label "Timeline of knowledge about the interstellar and intergalactic medium".
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium sameAs Q7806090.
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium sameAs Q7806090.
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium wasDerivedFrom Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium?oldid=593193071.
- Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium isPrimaryTopicOf Timeline_of_knowledge_about_the_interstellar_and_intergalactic_medium.