These frames detail the changes around Pele on Jupiter's moon Io, as seen by Voyager 1 (left), Voyager 2 (middle), and Galileo (right). The Voyager frames were taken in 1979 when the two spacecraft flew past Jupiter and it's moon Io. The Galileo view was obtained in June, 1996. Note the changes in the shape of the deposits further from the vent while the radial dark features closer to the vent show little change. The Voyager images use orange, blue, and violet filters. The Galileo image uses the green and violet filters of the Solid State Imaging system aboard the Galileo spacecraft and a synthetic blue. All three images are in a simple cylindrical projection and are approximately 1700 km x 1500 km. North is to the top.
The Jet Propulsion Laboratory, Pasadena, CA manages the mission for NASA'is Office of Space Science, Washington, DC.
This image and other images and data received from Galileo are posted on the World Wide Web, on the Galileo mission home page at URL http://galileo.jpl.nasa.gov. Background information and educational context for the images can be found at URL http://www.jpl.nasa.gov/galileo/sepo. Image Credit: NASA/JPL