An unexpectedly heavy element is floating in two exoplanet atmospheres and astronomers aren't sure why it isn't sinking into the planets
– it’s nearly 2.5 times heavier than iron. “Our first thought is that something so heavy would sink down in the atmosphere,” says Azevedo Silva. “This raises a lot of questions about how it got there and what’s going on.”
It may be that there is unexpected convection within each of these worlds, churning barium and other heavy elements towards the top of their atmospheres. Azevedo Silva says it could also be related to their proximity to their stars – each of these planets isAnd because the researchers found it in both the worlds they checked, whatever process lofts barium to the top of these atmospheres could be common in other ultra-hot worlds as well.
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