So researchers have done just that, imaging each of the members of a four-planet system called HR 8799, which is centered on a bright young star about 130 light years from Earth.
Their findings suggest that none of the planets' atmospheres look very much like any of the others, and only one of them looks like a member of our own solar system.
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Atmospheres of four exoplanets analyzed
One star, four very different bodies orbiting it.
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Wht is dat?