In 2005, the Huygens probe landed on Saturn's moon, Titan. It snapped pictures for an hour before its power ran out. Wired News is reporting that one of the images has been announced as proof that methane exists in liquid form on the moon.
Astronomers have cause to believe that there might be a full environmental cycle of liquids on Titan, similar to what we have on Earth. Except where Earth's cycle involves water, Titan's cycle would involve methane. Methane would evaporate from the surface, form into methane clouds, fall back to land as methane rain, and gather in methane lakes. Titan has observable clouds and lakes, so the question is whether methane mingles between the two.
If so, Titan may be supporting life at the microscopic level. On earth, microbes that live off methane do quite well for themselves. Read more
Jupiter changes, so does the Spot. The Spot really is properly called "Great"; it is so far the largest known storm in our Solar System, with a diameter of 15,400 miles. In other words, just the area covered by the storm on Jupiter is almost twice the size of Earth (and about one-sixth of Jupiter’s diameter). We've been watching the spot long enough now that we can see it is definitely shrinking. What's more, as currents and weather patterns shift, we've witnessed, albeit at a very great distance, new storms and smaller spots appearing in Jupiter's images. 
