'Is it going to rain today?' 'Will it be a sunny weekend? ' The British are famous for discussing the weather. Its vagaries are part of our lives, and we all watch the forecasts. 1957 saw the start of the space age, and since then space probes have not only provided information about other planets in the solar system, but they have also studied the atmosphere and weather on Earth itself. Recently, more elaborate satellites have produced the clear pictures we see on television forecasts. Patrick Moore talks to Michael Fish about how these satellites in space have revolutionized weather forecasting.