The Winter Sky

The winter stars are more brilliant than those of any other season. Orion dominates the scene, together with his brilliant retinue. Two particularly interesting stars are visible; the Twins, Castor and Pollux - Pollux an orange giant and Castor a sort of stellar family, made up of no fewer than six sans. Patrick Moore talks about these unusual stars and gives the latest news about developments at the new observatory in La Palma and about the approach of Halley's Comet.