Scientists have detected hydrogen sulfide in the atmospheres of three massive exoplanets orbiting the young star HR 8799, marking the first time the molecule has been identified in planets observed through direct imaging. The measurement, made with NASA’s James Webb Space Telescope, provides new evidence that these very large gas giants can form the same way Jupiter did: by accumulating solid material.
Located about 130 light-years from Earth, the HR 8799 system contains four known planets, each several times the mass of Jupiter. Since their discovery in 2008, these bodies have become key targets for studying young giant worlds because they can be observed directly, rather than inferred from subtle changes in their host star’s motion.
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Source www.theweather.com
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