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]

jun 292012
 
Astronomers Detect Dramatic Changes on an Exoplanet

  An international team of astronomers using data from NASA’s Hubble Space Telescope has made an unparalleled observation, detecting significant changes in the atmosphere of a planet located beyond our solar system. This artist’s impression shows exoplanet HD 189733b, as it passes in front of its parent star, called HD 189733A. Hubble’s instruments observed the [continue reading]

jun 032012
 
Astronomers Confirm 'Evaporating' Planet Around Nearby Star

  Astronomers from The University of Texas at Austin and Wesleyan University have used the Hobby-Eberly Telescope at UT Austin’s McDonald Observatory to confirm that a Jupiter-size planet in a nearby solar system is dissolving, albeit excruciatingly slowly, because of interactions with its parent star. Their findings could help astronomers better understand star-planet interactions in [continue reading]