Life on Other Planets

Life as we know it on earth is carbon based and requires a certain environment to survive. Even so, there are creatures on earth which seem to be able to survive in harsh environments, where the temperatures are very cold, or where there is little water or oxygen. It is environments like these which are similar to those found on other planets.

Sophisticated life forms are relative newcomers on Earth compared to bacteria and archaea. They arrived later because the Earth proved to be a healthy environment over a long period of time. Because the environment of other planets is more primitive, life on other planets (if it exists) may be primitive. If not, then life would have developed the ability to withstand otherworldly environments as well as finding material for food. We might have to imagine what suchcreatures would be like.

Primitive life forms may have an easier time in a harsh environment. All life will leave behind certain signs that it has been there. Scientists recently thought that they had found some of these signs on a Martian meteorite, but it turned out to be untrue. No concrete evidence of life anywhere other than life has been found.

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