NASA's Hubble Space Telescope caught Jupiter's moon, Ganymede, seemingly playing a game of peek-a-boo in this image in April 2007.

2007年4月，NASA的哈勃空间望远镜捕捉到木星的月亮——Ganymede——的踪迹，看起来像是正在玩躲猫猫的游戏。