Title: Is There Life on Other Planets? - Universavvy
Headings: Is There Life on Other Planets?
Is There Life on Other Planets?
Martian Microbes
5 Controversial Theories of Life on Other Planets
Drake Equation Theory
Panspermia Theory
Directed Panspermia
Ballistic Panspermia
Lithopanspermia
Biochemical Evolution Theory
Theory of Extremophiles
Habitable Planet Theory
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Content: A major one is that if life existed on Mars before Earth, where is it now? If it got extinct, then suitable fossil appearances should have been found till now by the three robotic rovers on the red planet. Also, if a more advanced civilization spread the biomolecules to our planet, why didn’t they contact us, i.e., humans, again after our planet underwent significant changes regarding evolution and development of higher life forms? Such questions might be answered if we ever find aliens on another planet. Biochemical Evolution Theory
✦ The most important factor in determining the presence of life is the environment. If we assume that the conditions such as those on planet Earth can be created anywhere in the Universe or already exist in it, then the idea of life on that planet is almost a certainty. Based on the survival mechanism of human beings, we may be able to predict the possibility of a whole new set of beings similar to us. ✦ Human beings need air to breathe, water to drink, and food for survival. The availability of these factors is a must for each one of us to sustain on Earth. Hence, there is a lot of curiosity among experts with regard to the planet Mars, Mercury, Jupiter, the moons of Jupiter and Saturn like Europa and Titan, respectively, in our solar system.