Jupiter

  • Europa Diary I: Landing on Alien Terrain
    The Europa Focus Group, a collaboration of scientists who study Jupiter's ice-covered moon, met recently on Alaska's North Slope. By studying the unique terrain at the edge of the Arctic Ocean, they foreshadow future expeditions to search for life on Europa.
    more...
  • Jupiter’s Perfect Storms
    A spectacular photo album of 43 different Jovian storms reverses the 50-year old picture of Jupiter's belts and rotating zones. The new photos were captured by the Cassini spacecraft on its way to Saturn.
    more...
  • Jupiter: Moon Festival
    Jupiter's mini solar system of now 48 satellites offers compelling insights into how the planets and moon formed, as well as supplying a mystery: How does Jupiter capture and hold on to its festival of moons?
    more...
  • Long Journey’s End
    A pair of interplanetary workhorses were announced as retiring after long and valuable service. The two spacecrafts--Pioneer 10 and the Galileo mission--both far exceeded their initial plans and revealed spectacular close-up images of the outer solar system.
    more...
  • Salty Volcanoes on Jovian Moon
    Scientists trying to resolve a 30 year mystery of how one of Jupiter's moons generates a cloud of charged particles have found an answer. The stunningly colorful moon, called Io, has a pillar of salt that gets spewed from its volcanic surface.
    more...
  • Europa: Chewy or Crunchy?
    For geophysicist William B. Moore, the question of whether life exists on Jupiter's moon Europa boils down to whether the moon's center is chewy or crunchy.
    more...
  • Sunset on Io
    Jupiter's closest moon, Io, is revealed in new imagery at sunset, giving a stunning glimpse of a mountain nearly as tall as Mount Everest. Io's unique volcanism gives it heat far from the Sun.
    more...
  • News_Image_807
    Jupiter's moon, Io, blasted a volcanic eruption miles high and visible to ground telescopes in Hawaii. The eruption site is larger in surface area than all of Los Angeles or London.
    more...
  • Galileo Flyby: Extreme Explorers Hall of Fame
    The Jupiter probe, Galileo, is this week's selection for the Extreme Explorers Hall of Fame. In the next ten days, the robotic spacecraft flies within 100 miles of the unusual moon, Amalthea, which gives off more heat than it receives. As Galileo has filled its
    more...
  • Amalthea Flyby: The Heat is On
    On November 5, the Galileo spacecraft with fly less than 100 miles over one of Jupiter's moons called Almathea. The moon is unique as one that gives off more heat than it receives from the Sun--perhaps from Jupiter's radiation bands or tidal heating.
    more...
  • Jupiter Uncloaks: Most Moons Ever Found at Once
    When Galileo's first telescope found 4 Jovian moons, could he have imagined? The most moons ever found at once--11. Discovered by Hawaii astronomers using a 7-foot lens at Mauna Kea, the moons must have been captured from solar-orbitting asteroids.
    more...
  • How Jupiter Got Big
    How did the largest planet in our solar system form? New theories on how planets like Jupiter form put traditional theories to the test.
    more...
  • Jovian Moons
    Jupiter's four largest moons were discovered by Galileo in 1610. Three of them might hold oceans of liquid water beneath their icy exteriors. Liquid water is a prerequisite for life.
    more...
  • Focus on Europa
    Scientists from a variety of disciplines met recently to consider the possibility of life on Europa, and to plan how to look for it.
    more...
  • Through Thick or Thin: Exploring Europa’s Outer Layer of Ice
    When NASA's Galileo spacecraft sent back images and data of the Jovian moon Europa, scientists began thinking seriously that life just might exist on this enigmatic, frozen world.
    more...