Season 40 Episodes14
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Iras (the Infrared Astronomical Satellite), which operated for much of 1983, provided a great deal of information on aspects such as the presence of cool, possibly planet forming, material around stars like Vega. Iso (the Infrared Space Observatory) is now performing well. Dr Helen Walker
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"Cool Stars Matter" is episode 10 of The Sky at Night season 40. It aired on August 19, 1996.