Life On Other Worlds

It is only a matter of time until life is found on other worlds, the question is, what forms will it take? Based on scientific principles life can be expected to be similar in function throughout the universe.. Assuming life on other worlds is as on Earth based on carbon and water, its forms will be similar to those of Earth. The specific forms taken will be determined primarily by the nature and stage of evolutionary adaptation to the life form's specific environments.

For example, a fish will look like a fish throughout the universe. Life on other Earth type worlds will probably evolve similarly to life on Earth. Then the forms of life encountered will depend primarily on the evolutionary stage.
Life on other worlds without water could still be based on carbon, but depend on chemical reactions in liquid ammonia or methane, in an environment such as on Jupiter.. Such reactions are in many cases similar to those in water..
Life might possibly be based on an aqueous environment, but employ the element silicon rather than carbon. The chemistry of carbon and silicon is similar. Silicone rubber's properties are similar to carbon based rubber. Silicon is considerably less reactive than carbon, and life forms based on its chemical reactions would probably be much slower than with carbon based forms. Life forms employing non-aqueous environments or silicon may look very different than what we are accustomed to.
New Earth type worlds are out there waiting to be colonized. My book Starship To New Earth Now presents practical plans for the construction and operation of the starship that can transport us to those worlds.