Beautiful isn't it? This is an image taken by the Hubble Telescope. A telescope that has given us a lot of discoveries, a lot of new information on our solar system, on our galaxy, on the universe in which we live.
Jupiter is the biggest planet of our solar system. It is a gas giant; this means that Jupiter does not have a surface as such; its composition is mostly hydrogen and helium.
The image at the left shows the shadow of Io, one of Jupiter's many moons, as it is cast over on the upper atmosphere of the planet. Io is one of the most volcanically active bodies of our solar system.
For more beautiful photos and more information, you can go to the Hubble Site itself: HubbleSite by NASA.