apr 152013
Best Spots on Europa to Search for Extraterrestrial Life

  The surface of Jupiter’s moon Europa exposes material churned up from inside the moon and also material resulting from matter and energy coming from above. If you want to learn about the deep saltwater ocean beneath this unusual world’s icy shell — as many people do who are interested in possible extraterrestrial life — [continue reading]

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 192013
Anne's Picture of the Day: Jupiter’s moon Europa

March 19, 2013 Jupiter’s icy moon Europa Image Credit: NASA/JPL/DLR Jupiter’s moon Europa is, with just over 3,100 kilometers (1,900 mi) in diameter, slightly smaller than Earth’s Moon. It is the sixth-largest moon of Jupiter, and the smallest of its four Galilean satellites but nonetheless more massive than all known moons in the Solar System [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]