Sir George Biddell Airy , KCB , PRS ( ; 27 July 1801 -- 2 January 1892 ) was an English mathematician and astronomer , Astronomer Royal from 1835 to 1881 .
Sir George Biddell Airy ( 27 July 1801 -- 2 January 1892 ) was an English mathematician and astronomer , Astronomer Royal from 1835 to 1881 .