The crossword solution for the term 'Astronomer British' is Halley, a six letter word. Edmund Halley was an English astronomer, geophysicist, mathematician, meteorologist, and physicist who lived from 1656 to 1742. He is best known for predicting the return of the comet that now bears his name, and for computing the orbit of the comet. He also made important contributions to the science of astronomy, including the first catalog of stars and the first map of the magnetic field of the Earth.