WASP-76b is baking. Now new observations suggest the horrid inferno globe could be somehow worse.
, it seemed beyond hellish: a gas giant so hot that iron doesn’t just melts but gets vaporized, only to condense on the night side of the planet and fall as a sort of molten metal rain.
Now new observations suggest this horrid inferno globe could be even hotter than all that — much hotter. A team of researchers with leaders from University of Toronto, Cornell, and Queen’s University Belfast used Cornell’s Exoplanets with Gemini Spectroscopy survey, or ExoGemS, to identify the presence of ionized or “free” calcium in the planet’s atmosphere.. “This spectral signature of ionized calcium could indicate that the exoplanet has very strong upper atmosphere winds... Or the atmospheric temperature on the exoplanet is much higher than we thought.”...
has a day side where temperatures climb above 2400 degrees Celsius, high enough to vaporise metals. Strong winds carry iron vapour to the cooler night side where it condenses into iron droplets. To the left of the image, we see the evening border of the exoplanet, where it transitions from day to night.
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