The background image is from Hubble Space Telescope and shows the turbulent pattern generated by the two plumes on May 11, 2007 (upper left part of Jupiter). The two bright plumes detach in the superimposed small infrared image obtained at the NASA-IRTF facility a month before, on April 5, 2007.

Credit: NASA/ESA, IRTF, and A. Sÿnchez-Lavega and R. Hueso (Universidad del Pa­s Vasco, Spain)