Sir William Huggins , OM , KCB , FRS ( 7 February 1824 -- 12 May 1910 ) was an English astronomer best known for his pioneering work in astronomical spectroscopy together with his wife Margaret Lindsay Huggins .
Sir William Huggins , KCB , OM , FRS , ( 7 February 1824 -- 12 May 1910 ) was an English astronomer best known for his work in astronomical spectroscopy .