Did life come from space, or did it appear spontaneously here on Earth?

One of the greatest mysteries of all time is how life originated on Planet Earth.  Even the most basic and primitive cells are incredibly sophisticated and complex mini-universes that defy explanation as to how they formed.  Did life come from space, or did it appear spontaneously here on Earth? Is the origin of life unique to Earth, or has it happened many times before in other planets and moons of the Solar System and the universe? Did life start with RNA or DNA, or none of them? Did meteors carry life to Earth? Was Earth different than it is today when life started on this planet? Did life appear when there was no water on Earth?  Life is virtually a “miracle”: Where did it come from and how it settled?

Investigate about the origin of life on Earth and write about it.  The questions provided above are to motivate you to investigate about this topic; you do not need to answer them one by one. The work must be at least four paragraphs long, and each paragraph must contain at least five sentences