[/caption] NASA’s Hubble Space Telescope has caught Jupiter’s moon Ganymede playing a game of hide-and-seek. In this crisp Hubble image, Ganymede is shown just before it hides behind the giant planet. Images like this one are not only gorgeous and enjoyable to look at, but are also useful for studying Jupiter’s upper atmosphere. As Ganymede … Continue reading "Jupiter’s Moon Plays Hide-and-Seek with Hubble"