Scientists team led by Jane Greaves of Cardiff University,UK have detected the Phosphine ( which is considered as a presence of some habitats ) with the help of Clerk Maxwell Telescope in Hawaii along with the Atacama large Millimeter/sub millimeter Array (ALMA) in Chile earlier. Phosphine is a gas produced exclusively by microbes on earth and considered as a strong possibilities of life in other worlds, which has been observed in the clouds of Venus . This could reveal the truth beyond the life in other planets. the Gas absorbs radiation from warmer clouds deeper in the Venus’s atmosphere.which records a absorption line at 1.1 mm. The idea of tracing for phosphine as the signature of life in other worlds is a recent trend developed in 2019 by astronomers led by Clara Sousa-Silva at the Massachusetts Institute of technology, and now implemented by Jane Greaves.
Phosphine is a molecule came from the Phosphorous ,also an important building block of RNA and DNA. On earth , phosphine is produced by by anaerobic bacteria, which are microbes that doesn’t require oxygen. They absorb phosphate minerals and combine them with hydrogen, releasing Phosphine in the process. Phosphine is not produced by any Known geological process. Sousa-Silva’s work, which tells astronomers hoe to detect Phosphine in the atmospheres of planets like earth, shows that the presence of phosphine would act as an iron-clad biomarker since there ere no other way in earth like planets to produce it.Venus is a bit strange planets as it’s surface swelters at an average temperature of 460 Degree Celcius with an atmospheric pressure of 93 bar comparatively as 1 bar on earth. this planets atmosphere is mostly covered with carbon dioxide, interlaced with clouds of Sulphuric acid.
Since the planets like Jupiter and Saturn are rich in Hydrogen, They can produce phosphine through non-biological process with having huge amount of hydrogen abundance under high temperature and pressure deep within the inner part of planets. Substantially Venus has very little Hydrogen by losing the hydrogen with most of the planet’s water long ago.but Venus is carbon Rich. with the absence of free hydrogen it is difficult to produce phosphine in non- biological process. The only other evidence for phosphorous detection on Venus having been made by the Soviet Union’s Vega lander in 1985.
Scientists have speculated about the existence of microbial life in Venus clouds and said that the unidentified ultraviolet -absorbing particles present within the planet’s atmosphere. these particles are mapped by the Japanese Aerospace Exploration Agency’s Akatsuki orbiter.Venus has generally bad conditions as some regions are more hellish than others. Greaves said that ” The altitude that we probed is the end of what is sometimes called the Venusian habitable zone”. This extends about 47-60 km above the surface , temperature ranges between 0-100 degree Celcius and atmospheric pressures average about 1 bar. Sanjay Limaye, atmospheric physicist from the university of Winconsin,Madison said that ” Confirmation of the presence of phosphine by other means is very much needed”.
In future NASA would make a mission to Venus which could explore this potentially habitable region of atmosphere to gather some more relevant and strong data regarding life beyond Earth.