Season 27 Episodes13
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Two rocket probes, Pioneers 10 and 11, are on their way out of the solar system. They are sending back new information about the heliosphere, that part of space in which the influence of the sun is dominant. Patrick Moore and Iain Nicolson talk
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"Pioneering the Heliosphere" is episode 7 of The Sky at Night season 27. It aired on July 3, 1983.