Dare to stare at this Neptune-sized 'mirror.'
For the team on this study, LTT9779 b’s high albedo came as a surprise, since the side of the planet that faces its host star is estimated to be around 3,632 degrees Fahrenheit. Any temperature above 212 degrees is. On paper, the temperature of LTT9779 b’s atmosphere should even be too hot for clouds that are made of glass or metal.
“It was really a puzzle, until we realized we should think about this cloud formation in the same way as condensation forming in a bathroom after a hot shower,” said co-author and Observatory of Côte d’Azur researcher Vivien Parmentier. “To steam up a bathroom you can either cool the air until water vapor condenses, or you can keep the hot water running until clouds form because the air is so saturated with vapor that it simply can’t hold any more.
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