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Where did life come from, and are we alone in the universe?

2 Answers

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There are 7 theories regarding the origin of life-

1. Interaction of chemical compounds over a long period of time, under a protecting cover of ice.

2. The action of lighting to form increasingly complex organic molecules.

3. Panspermia-life arrived on space debris, as per Tardigrades space creature.

4. RNA- I'm not too sure about this one. IT presumably takes over after one of the first two.

5. Clay- presumably similar to1.

6. Submarine Hydrothermal Vents- Its also presumably takes over after one of the first two, perhaps in conjunction with 4.

7. Inevitability- Given the right set of conditions, i.e an external source of energy.
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The origin of life is still a mystery, but scientists believe it may have started in the oceans. It is unknown if we are alone in the universe.
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