Did the evolution of life begin on our Earth? Many indications point to the fact that life was not restricted to this one planet only but spread from one celestial body to the next. Long before one discovered traces of former oceans and rivers on Mars had we written down these facts in the chapter PLANETARY EVOLUTION. For Mars is a planet of the past. It was once like the Earth and just as alive. Now it is dead, dried up, robbed of its oxygen, and shrunken. A dead planet, whereas Venus seems to be the planet of the future for it resembles an Earth of billions of years ago. A planetary evolution from planet to planet, this is an awesome speculation! Even the development of the planets themselves is exciting and surprising. Children of the sun they are, born one after the other by a sun which is by no means as unchanging as one believes...






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