jul 262012
 
Distant Planetary System is Just as 'Neat' as Ours

  Researchers measure the orientation of a multiplanet system and find it very similar to our own Solar System. In this artist interpretation, the planet Kepler-30c is transiting one of the large starspots that frequently appear on the surface of its host star. The authors used these spot-crossing events to show that the orbits of [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
 
A Study of 63 Hot Jupiter Systems

  Jason H. Steffen from the Fermilab Center for Particle Astrophysics et al submitted to The Astrophysical Journal an article entitled “Kepler constraints on planets near hot Jupiters,” a sample study of 63 Hot Jupiter systems. Artist’s concept of a “hot Jupiter” (HD 149026b). Image Credit: NASA/JPL-Caltech   They found that in planetary systems with Jupiter-size planet candidates in [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]

mei 082012
 
Why all the hot Jupiters are so lonely

  “Hot Jupiter-type” planets are most likely to be alone in their systems, according to research by a University of Florida astronomer and others. An artists rendering of a hot Jupiter Credit: ESA – C. Carreau This research used information gathered by NASA’s planet-hunting Kepler mission, which uses a 1-meter space telescope to stare constantly at [continue reading]