Lost: A giant belt of brown clouds big enough to swallow Earth twenty times over. If found, please return to Jupiter.

May 20, 2010:

 In a development that has transformed the appearance of the solar system’s largest planet, one of Jupiter’s two main cloud belts has completely disappeared.

“This is a big event,” says planetary scientist Glenn Orton of NASA’s Jet Propulsion Lab. “We’re monitoring the situation closely and do not yet fully understand what’s going on.”