How many satellites inside of this solar system have we sent probes to? Satellites like Europa seem so interesting, it is amazing that not much has been done to send something there. Just look at pictures from space of the surface; a giant ice sheet with thousands of valleys in it. Imagine standing there on an ice sheet overlooking a valley made of ice hundreds of times larger than the Grand Canyon. Forget Mars, there is nothing there but red dust and rocks, not too different from some places on earth. On Europa, not only is it exponentially more beautiful and interesting, but many scientists think that there could be life in the proposed oceans beneath the ice.