apr 052013
 
Volcanoes on Jupiter's Moon Io are in the Wrong Spot

  Jupiter’s moon Io is the most volcanically active world in the Solar System, with hundreds of volcanoes, some erupting lava fountains up to 250 miles high (about 400 kilometers). However, concentrations of volcanic activity are significantly displaced from where they are expected to be, based on models that predict how the moon’s interior is [continue reading]

mrt 072013
 
Water from Europa's Ocean Sometimes Comes to the Surface

  With data collected from the mighty W. M. Keck Observatory, California Institute of Technology (Caltech) astronomer Mike Brown — known as the Pluto killer for discovering a Kuiper-belt object that led to the demotion of Pluto from planetary status — and Kevin Hand from the Jet Propulsion Laboratory (JPL) have found the strongest evidence [continue reading]

jan 292013
 
Io's Volcanism Controls Jupiter's Auroral Activity

  Jupiter’s volcanic moon Io spews out volcanic gas, which reaches its atmosphere and becomes ionized, forming what is known as the Io plasma torus. This plasma torus can interact with Jupiter’s magnetosphere, possibly affecting auroral activity there. This ultraviolet image of Jupiter was taken with the Hubble Space Telescope Imaging Spectrograph (STIS) on 26 [continue reading]

jun 102012
 
The Complexity of Volcanic Heat on Io

  A new study finds that the pattern of heat coming from volcanoes on Io’s surface disposes of the generally-accepted model of internal heating. The heat pouring out of Io’s hundreds of erupting volcanoes indicates a complex, multi-layer source. These results come from data collected by NASA spacecraft and ground-based telescopes and appear in the [continue reading]

mei 032012
 
Jupiter's icy moons are Europe's next large science mission

  Jupiter’s icy moons are the focus of Europe’s next large science mission, ESA announced. Artist’s impression of JUICE   The Jupiter Icy moons Explorer – JUICE – was selected over two other candidates: NGO, the New Gravitational wave Observatory, to hunt for gravitational waves, and ATHENA, the Advanced Telescope for High-Energy Astrophysics. JUICE is [continue reading]

mrt 202012
 
New Geologic Map of Jupiter’s Moon Io Documents Dynamic Volcanic Surface

More than 400 years after its discovery by Galileo, Io – the innermost large moon of Jupiter – can finally rest on its geologic laurels. A group of scientists including David A. Crown of the Planetary Science Institute has produced the first global geologic map of the Jovian satellite. The map, which was published by [continue reading]