Life Might Be More Common in Universe and Here Is Why




As a curious race, we continue to search for life on other planets, and we haven't understood it well for hundreds of years, but now we do, and we also know where to look for it.


Earth has been present for the last 4.5 billion years or so: about the last part of the origin of the Universe.


In a mix of geology and paleontology, we can establish the presence of life back more than four billion years, telling us that life started very early on Earth.


Life has survived and thrived for billions of years since human beings began: the first intelligent and technologically evolved species in our world.


If there is one thing about the universe that is clear, that is that life resides. It had to start at some point in time, somehow.

Our Serch for Life starts looking for Earth-like planets or at least some sort of natural habitat for life, and we've discovered thousands of new exoplanets in the last decade.


While the original observations were mainly from Jupiter-like giant planets, the more recent ones have also unraveled several Earth-like rocky planets.


Earth-like only means that the earth is terrestrial (i.e. rocky) in nature and has enough mass to hang on to the atmosphere. Through this description, Venus and Mars are both Earth-like.


Although as we talk about Earth-like planets, we are more interested in whether life (as we know it) will survive on them.


Life On Our Soler System


As the only life we know is founded on Earth, studies of the origins of life are confined to the basic circumstances that we observe here. But that doesn't suggest that life does not occur in hellish environments like the microbial life of recent discoveries.


The discovery is important because here on Earth, phosphine is still linked to living organisms, either as a by-product of metabolic processes or human technology, such as commercial fumigants and methamphetamine laboratories.


While toxic to many animals, the molecule has been identified as a potentially unmistakable symbol of life, since ordinary volcanic or atmospheric activity is so difficult to achieve.


Life On Moons


Life doesn't only have to exist on planets, but life may also exist on moons, particularly in the solar system where we have few rivals for life.


Enceladus, Saturn's sixth-largest moon was considered the most favorable bet for life, due to its warm temperature and the possible existence of water and basic organic molecules.


It's Europa, The Moon of Jupiter Europa also appears to be a perfect stomping ground for alien life due to its potential for water and seismic activity.


Possibility of Life


NASA recently deployed its Mars Perseverance Rover, hoping to discover life or at least a hint of life.


On Mars, it is at least likely that life began on the earth, where the vast energy available from the Sun could be used, and eventually spread to the subsurface when the surface becomes a frozen desert.


With the experience we've gained from numerous orbiters, landers, and rovers, we've made a slew of interesting discoveries about Mars.


We can see dried-up riverbeds and traces of ancient glacial activities on the Martian surface.


We find tiny hematite spheres on Mars as well as abundant signs of sedimentary rock, all of which typically only in aqueous conditions on Earth.


And we've seen dense subsurface glaciers, snow, and even frozen surface water on Mars in real-time.

 

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