A series of talks to mark the tercentenary of the Royal Society
4-The New Astronomy by R. Hanbury Brown, F.R.S.
Professor of Radio Astronomy in the University of Manchester
Radio techniques have developed into a valuable observational method in astronomy. They provide information inaccessible to optical telescopes; conversely, the precision of conventional methods supplements radio data. The problems raised by the stability of spiral galaxies (complex structures of stars, gas, dust, and magnetic field) are among those that may be solved by this new approach.