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Io over Jupiter from Voyager 1 : Back in 1979, NASAs Voyager 1…

Io over Jupiter from Voyager 1 : Back in 1979, NASAs Voyager 1 spacecraft flew past Jupiter and its moons. The images in this mosaic, featuring the moon Io against a background of gas giant Jupiters diffuse swirling cloud bands, were recorded by Voyagers camera from a distance of about 8.3 million kilometers. The Io image from this mosaic may be the first to show curious round features on Ios surface with dark centers and bright rims more than 60 kilometers across. Now known to be volcanic in origin, these features were then thought likely to be impact craters, commonly seen on rocky bodies throughout the Solar System. But as Voyager continued to approach Io, close-up pictures revealed a bizarre world devoid of impact craters, frequently resurfaced by volcanic activity. Earlier this year a new robotic spacecraft, NASAs Juno, began to orbit Jupiter and last week made a pass within 5,000 kilometers of Jupiters clouds. During the next two years, it is hoped that Juno will discover new things about Jupiter, for example whats in Jupiters core. via NASA

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Io over Jupiter from Voyager 1 : Back in 1979, NASAs Voyager 1…

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