Devoid of Life

Cameras on spacecraft and landers have scouted the surfaces on Mars, asteroids and now even a moon in the outer solar system -- Titan, orbiting Saturn. But the Martian surface is dry and Titan's surface is drenched in liquid methane, though so far devoid of life. Jupiter's moon Europa may host seas of liquid water beneath its frozen surface. So liquid water may not be so rare a commodity in the outer solar system, raising expectations that one day life may be found. "But microbes are not going to call home. What about more sophisticated animals or plants?