Orbiting Space-Stations

The Russian Soyuz flights and America's planned launching of a manned Skylab in 1973 are steps towards the establishment by the 1980s of permanent observatories outside earth's atmosphere. As well as making observations of the sun, a purpose of the first Skylab is to solve the problem of enabling crews to work efficiently during long periods of weightlessness. Patrick Moore discusses this problem With Wing Cmdr. Tony Nicholson and explains how such observatories will help astronomers to see further into outer space.