Season 33 Episodes13
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The IUE or International Ultraviolet Explorer satellite was launched in 1978. It had an estimated lifespan of three years, but it is still operating and has revolutionised our whole understanding of the stars. In this month's Sky at Night, Patrick Moore is joined by Professor
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"Exploring the Ultraviolet Sky" is episode 5 of The Sky at Night season 33. It aired on May 13, 1989.