Extraterrestrial Life Search Odds Scientific Evidence

The search for extra-terrestrial life s ongoing through the works of various agencies. There are numerous planets in the galaxy with various similarities to the earth. Such similarities include the availability of the main ingredients to support life, including sources of energy and water. However, there isn't an accurate way of telling what is out there since there hasn't been any way of observing any microbial activities.

In my opinion, simple life possibly exists in the galaxy. This is primarily due to the evidence of some life-supporting ingredients such as water and possibly master molecules, including nucleic acids and proteins. Proteins construct amino acids, and nucleotides build nucleic acid. For instance, molecular hydrogen can be mixed with methane, ammonia, and water in the presence of an energy source capable of breaking the bonds to produce amino acids and sugars, and other nitrogenous bases which make up the nucleotides which become the building blocks for nucleic acid through which an organism can develop from (Fraser-McKelvie et al., 2021). Also, there has been proof of primitive photosynthetic organisms in the galaxy. These possibly exist because, unlike advanced organisms, they easily adapt to the instability of such environments owing to how their internal anatomy and physiology are structured.

While I believe that a simple life in the galaxy is possible, I don't believe that complex life exists beyond the earth. Complex life on earth entails so much that the galaxy cannot accommodate. This is primarily due to the instability of the galaxy since so much is still unknown. For instance, gamma-ray explosions or bursts associated with various planets in the galaxy cannot possibly support a life form beyond the microbes. Also, as much as some life-supporting ingredients are there, their stability raises concerns. For an organism to survive in a complex environment, that environment must first be steady to allow that organism to adapt to those conditions. However, instability is a significant phenomenon in the galaxy and possibly a reason for the lack of evidence supporting complex life in the galaxy (Bilder, 2020).