Even with the great diversity of life on earth and new species being discovered almost daily it is unlikely that any terrestrial creatures could survive in the environments of the other planets we have disco

The moons of the outer planets possibly harbor a much friendlier environment for life to evolve. Titan is one intriguing example. A thick layer of clouds and a possible greenhouse effect obscures the surface. This may sound like not a very amiable mix but due to its distance from the sun this satellite should be very cold, somewhere in the neighborhood of 100K. The greenhouse effect could warm the surface to an acceptable temperature for liquid water to exist and maybe even life. Europa is another of the Galilean satellites that may be hospitable to life, as we know it. It appears to be about 10 to 15% water ice and judging from its spectrum the entire surface looks to be covered by it! With sufficient volcanism below this icy surface there may be an entire ocean of liquid water beneath. This environment could conceivably harbor organisms like the tubeworms mentioned previously.

The outer planets are still a mystery to scientists. Although we may know what their upper atmospheres are composed of none of our probes have been able to penetrate deep enough to delve into these planets extensively. These gas giants I have heard referred to as brown dwarfs or nearly stars, due to their enormous mass. It would take a stretch of the imagination to think we could find organisms inhabiting them. The only possibility I have heard of says that organisms could be living in the upper atmosphere of these behemoths, floating around on the torrential winds and not quite deep enough into the atmosphere to be crushed by the pressure and feeding on particles that are in the storm with them.

Judging from the diversity and determination of life on earth I find it almost inconceivable that we will not fin

Some common words found in the essay are:
, Europa Galilean, Carl Sagan, solar system, life earth, greenhouse effect, planets discovered, earth diversity, liquid water, gas giants, elsewhere galaxy, life mars, water ice, own solar system,
Approximate Word count = 1153
Approximate Pages = 5 (250 words per page double spaced)