An international team of scientists using the Hubble Space Telescope’s Imaging Spectrograph has for the first time determined the true color of an extrasolar planet. An artist’s impression of HD 189733b, a huge gas giant that orbits very close to its host star HD 189733 (NASA / ESA / M. Kornmesser) The planet, named HD 189733b, would be a deep azure blue, reminiscent of our planet’s color as seen from space. Discovered in 2005, HD 189733b is...
