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March 13, 2020 10:00 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/17v0Yu_dEak/molten-iron-rain-falls-through-the-skies-of-scorching-hot-exoplanet
Molten Iron Rain Falls Through the Skies of Scorching-Hot Exoplanet
A new study reports that iron rain likely falls through the thick, turbulent air of WASP-76 b, a bizarre "ultrahot Jupiter" that lies about 640 light-years from the sun, in the constellation Pisces. Space.com reports: WASP-76 b zips around its host star once every 1.8 Earth days, an orbit so tight that the gaseous planet is "tidally locked," always showing the star the same face. Temperatures on this dayside climb above 4,350 degrees Fahrenheit (2,400 degrees Celsius) -- hot enough to vaporize metals -- whereas the nightside is a much cooler (but still ridiculous) 2,730 F (1,500 C), researchers said. WASP-76 b was discovered in 2013. The alien planet is about as massive as Jupiter but nearly twice as wide, likely because the massive radiation loads the exoplanet receives from its host star puff up its atmosphere considerably. (And one quick note about the object's distance: Some sources say that WASP-76 b is about 390 light-years away, but that number is inaccurate, Ehrenreich said. He and his colleagues calculated WASP-76 b's distance using data from Europe's ultraprecise star-mapping spacecraft Gaia.)Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/17v0Yu_dEak/molten-iron-rain-falls-through-the-skies-of-scorching-hot-exoplanet
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