Wednesday, January 16, 2019

Bad weather in space? (part 3)


I live in a place with such volatile weather patterns that there's a saying around here: “If you don't like the weather right now, wait a minute.” Perhaps the same thing can be said about the weather on HD 80606b, though its range of extremes is enough to literally silence all complaints. The reason for these extremes? This planet has one of the most eccentric orbits yet observed, moving from a distance similar to Earth's distance from the sun to a distance 33 times closer to its star. The result is a swing from temperatures of 980 to 2,240 °F (527 to 1,227 °C), more than doubling in only 6 hours! This sudden change is caused by a blast of radiation in the atmosphere of the planet-side facing the star, producing winds of 11,000 mph (17,700 kph) across the planet's surface. The rotational spin of the planet then creates a massive vortex of storms that convey the heat across the rest of the planet. With sudden changes in temperature like that, you'd better pack both your parka and swimsuit...and don't forget that sunblock!

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