Just over four light-years away, our Solar System's closest neighboring stars can be found. There's red dwarf Proxima Centauri, at a distance of 4.2 light-years; and, just a little farther, at 4.37 light-years, a binary system of Sun-like stars – A
We don't yet know if there are any Earth-like worlds orbiting the binary. Such exoplanets are just a little too tricky to detect with our current technology. But if there is one there, we now have a better idea of what it might be like, thanks to a study led by planetary scientist Haiyang Wang of ETH Zürich in Switzerland.
"We present an analysis of planetary bulk composition, interiors, and atmospheres for a model Earth-sized planet in the habitable zone of Alpha Centauri AB,""The detailed analysis offers a new approach of investigation to what we may expect for Earth-sized planets in the habitable zones in the solar neighborhood."
We know from spectral analyses that rock-forming elements, such as magnesium, silicon, and iron, are present in Rigil Kentaurus and Toliman, as well as volatiles that evaporate quickly, such as carbon and oxygen.
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