Going Wild . ... Credit Copyright: STARDUST Team , JPL , NASA Explanation: Dynamic jets of gas and dust surround one of the most active planetary surfaces in the solar system in this wild-looking picture of a comet nucleus . ... The composited images consist of a short exposure recording startling surface details of Wild 2's nucleus and a longer exposure, taken 10 seconds later, revealing material streaming from the surface. ... NASA Web Site Statements, Warnings, and Disclaimers . ...