NBC News: Exoplanet’s color detected for the first time

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HD-189733bFor the first time, astronomers have detected the color of a planet beyond our solar system: It’s blue, but not because there’s water on its surface. It doesn’t even have a “surface.” Instead, the color is thought to come from glassy grains of silicate in its atmosphere.

Photo: M. Kornmesser / ESA / NASA

The planet, known as HD 189733b, is a blazing hot gas giant circling a star 63 light-years from Earth in the northern constellation Vulpecula.

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