apr 262013
 
Jupiter’s Water Linked to Comet Impact

  ESA’s Herschel space observatory has solved a long-standing mystery as to the origin of water in the upper atmosphere of Jupiter, finding conclusive evidence that it was delivered by the dramatic impact of comet Shoemaker-Levy 9 in July 1994. Hubble view of the impact sites, a few days after the impacts. Image Credit: Hubble Space Telescope [continue reading]

apr 102013
 
Rain is Falling from Saturn’s Rings

  Astronomers using the W. M. Keck Observatory tracked the “rain” of charged water particles into the atmosphere of Saturn and found the extent of the ring-rain is far greater, and falls across larger areas of the planet, than previously thought. The work reveals the rain influences the composition and temperature structure of parts of Saturn’s [continue reading]

mrt 152013
 
Super-Sized Twin of our Solar System Contains Also Water

  Glimpses of a giant alien planet may help to answer questions about its origins and those of our own Solar System.   A team of astronomers, including Quinn Konopacky of the University of Toronto’s Dunlap Institute for Astronomy & Astrophysics, have made the most detailed examination yet of the atmosphere of a Jupiter-like planet [continue reading]

mrt 102013
 
The Source of the Solar Wind Energy Discovered

  Using data from an aging NASA spacecraft, researchers have found signs of an energy source in the solar wind that has caught the attention of fusion researchers. NASA will be able to test the theory later this decade when it sends a new probe into the Sun for a closer look. The solar wind [continue reading]

mrt 022013
 
A New Radiation Belt Around Earth Discovered

  NASA’s Van Allen Probes mission has discovered a previously unknown third radiation belt around Earth, revealing the existence of unexpected structures and processes within these hazardous regions of space. A graphic depicting the twin Van Allen Probes in orbit within Earth’s magnetic field. Image Credit: JHU/APL Previous observations of Earth’s Van Allen Radiation Belts have [continue reading]

feb 202013
 
A Cool Discovery About a Nearby Sun-Like Star

  ESA’s Herschel space observatory has detected a cool layer in the atmosphere of Alpha Centauri A, the first time this has been seen in a star beyond our own Sun. The finding is not only important for understanding the Sun’s activity, but could also help in the quest to discover protoplanetary systems around other [continue reading]