- Despite the surprisingly extensive study of the origin of life on Earth, we are still unsure how the first life forms of our planet were created.
- It is possible, many scientists say, that life on Earth may have come from somewhere else.
- Currently, our neighbor, Mars, is the prime candidate for a potential source of life that may have spawned the Earth.
How did life on Earth begin? It sounds like such a simple question, but because of the billions of years that have passed since the first forms of life began to do the thing on our planet, we don’t know the answer. Life on our planet may have come here, but it may just as likely have come somewhere else, like Mars.
The scientific concept that life can spread organically from one planet to another is called panspermia, and it is nowhere near as wild as it could be. We already know that rocks from Mars have come to Earth as we have found them here, but if ancient Mars was host to life, what are the assumptions that life on Earth is the result of just on life forms being ejected from Mars and sent quickly. towards the Earth?
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We have no way of confirming that panspermia has ever occurred. The Earth is the only known planet that has ever hosted life, so we have no way of knowing whether it is a valid theory, and moreover, if panspermia is the It’s up to us all to be here today. In a recent interview with Leas, Harvard astrophysicist student Amir Siraj offers an advanced insight into how panspermia can occur and the different ways in which life could be transmitted to other planets or perhaps even other star systems.
The events that would bring a planet like Mars to life on Earth are very simple. The strong impact of an asteroid hitting the surface of Mars could send life full of rocks into space. Eventually some of these rocks could find themselves on a collision with the Earth and, if these rocks sustain microbial life, these small life forms could survive on Earth, thus pollinating our planet with life.
Since we have already discovered parts of Mars on Earth, we know that this kind of interplanetary material exchange is indeed happening, but we cannot be sure with certainty whether Mars had life. ever, much less did that theoretical life travel to Earth.
Some more isolated theories of panspermia suggest that objects may be able to graze a planet’s atmosphere, pick up some microbes during flight, and distance out of a solar system and reach another. If that microbial life continues on the journey, and the rock hits an arable planet in another system, it could spread life in the same way.
Right now, this is all purely theoretical, but that may change in the end. If we find microbial life on Mars or evidence of a past life, we will be left with the question of whether that life was our ancient ancestor, or whether life developed on both Mars and Earth within the same few billion years.
Mike Wehner has been reporting on technology and video games for the past decade, covering news and trends in VR, wearables, smartphones, and the future of tech. Mike was most recently a Tech Editor at The Daily Dot, and has appeared in USA Today, Time.com, and in countless web and print outlets. His love of narrating only second place on his game thesis.