New analysis of an oft-studied exoplanet suggests the alien world reflect almost no light -- it's surface is pitch black, making it nearly invisible. The exoplanet is also so hot that few clouds can form and alkali metals are ionized. Its atmosphere behaves more like that of a small star.

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New analysis of an oft-studied exoplanet suggests the alien world reflect almost no light -- it's surface is pitch black, making it nearly invisible. The exoplanet is also so hot that few clouds can form and alkali metals are ionized. Its atmosphere behaves more like that of a small star.