WASP-121b May Have Formed Much Closer to Its Parent Star than Previously Believed Possible

WASP-121b May Have Formed Much Closer to Its Parent Star than Previously Believed Possible

Astronomers using the Immersion GRating INfrared Spectrograph (IGRINS) instrument on the Gemini South telescope have examined the atmosphere of WASP-121b, one of the most extensively studied ultrahot Jupiters.

This artist’s illustration shows WASP-121b, an alien world that is losing magnesium and iron gas from its atmosphere. Image credit: NASA / ESA / J. Olmsted, STScI.

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