Chondrites are the most common meteorites in the world. However, the carbonaceous chondrites represent only a small fraction of those. Among them, Allende meteorite is one of the most studied carbonaceous chondrites. The main objective of this paper is to use the Raman spectral peak positions of olivine as a parameter to chondrite classification, here, specifically, Allende meteorite. Although these correlations are not new in the literature, this approach has not been used to classify carbonaceous chondrites yet. To develop the olivine calibration, only the peak positions of the doublet in the 700–1100 cm−1 region were analyzed in this study. The typical Raman spectrum of olivine displays two major peaks, here called Peak A, with Raman shifting in the 814–824 cm−1 range, and Peak B, in the 836–857 cm−1 range. The results of measurements found were perfectly matched to a linear correlation between Peak A and Peak B. The peak position versus composition plot shows a good correlation between the samples used as reference. The correlation curve obtained from the reference olivines is consistent with the data found in literature, as well as the peak versus peak plot. Finally, from the analysis of the olivine Raman spectral peak positions present in Allende meteorite, it is possible to conclude that there is little Fe in its matrix. Actually, the proportion of metallic Fe is less than 3% when the range of fayalite content is between Fa26–32.Thus, although the exact amount of iron present in the sample is not entirely clear, this kind of methodology quickly and effectively provides a response regarding the Fa ratio in the meteorite.

The "origin of life" and "we are alone in the Universe" have always been unknown to the scientific community and much of the population. Astrobiology is a recent area that seeks to understand how life originated and evolved during these billions of years of the cosmos's existence. This article aims to clarify questions related to the origin of life and possible routes about the possibility of living and finding life outside the Earth, without any connection with religious dogmas. For this, the methodology used was to perform a bibliographical review on the central theme through astrobiology. This will cover topics such as microorganisms called extremophiles, conditions for a planet to be considered in a habitable region, possibilities for life to exist on Mars, and briefly address issues related to the possibility of colonization of our red planetary neighbor. With the obtained results it was concluded that Astrobiology proves to be a convergent area to the interests for the search for answers about the origin of Life and it is hoped that it can be used as a basis for future teaching and scientific dissemination work.