The Sky at Night

The 'Clocks' of Space

0.0November 4, 1968

Radio-astronomers at Jodrell Bank are carrying out a series of remarkable experiments to measure the distance from earth of 'pulsars'-the mysterious regularly-ticking radio sources out in space which were discovered last year by British scientists. Patrick Moore discusses the significance of these experiments with Dr. Gerhard de Jager at Jodrell Bank