Io is Jupiter's third-largest moon, spanning roughly 2,300 miles (3,700 kilometers) across, which makes it slightly bigger than Earth's moon. It orbits Jupiter at a distance of around 262,000 miles ...

Icy moon Ganymede—which JUICE will orbit—appears as a gray, mottled orb crossing the face of Jupiter ... [+] in this image from the Hubble Space Telescope. Sixty-seven orbits of Jupiter.

NASA's Juno spacecraft made a close flyby of Jupiter moon lo. See an animation of the images the probe captured created by Koji Kuramura and Gerald Eichstädt. Credit: NASA/JPL-Caltech/SwRI/MSSS ...

They follow July's perijove when JunoCam imaged potato-shaped Amalthea, Jupiter's fifth-largest moon. Amalthea orbits closer to Jupiter than Io. An image of Jupiter as seen by NASA's Juno on ...