jul 132013
 
Exoplanet HD 189733b Appears to be Azure Blue

  Astronomers using the NASA/ESA Hubble Space Telescope have, for the first time, determined the true color of a planet orbiting another star. If seen up close this planet, known as HD 189733b, would be a deep azure blue, reminiscent of Earth’s color as seen from space. This illustration shows HD 189733b, a huge gas giant that orbits very [continue reading]