This Halloween, take a tour with NASA's Exoplanet Exploration site of some of the most terrifying destinations in our galaxy. The nightmare world of HD 189733 b is the killer you never see coming. To the human eye, this far-off planet looks bright blue. But any space traveler confusing it with the friendly skies of Earth would be badly mistaken. via NASA http://www.nasa.gov/image-feature/rains-of-terror-on-exoplanet-hd-189733b
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