After doing a research, scientists came up to a conclusion that there is at least one alien civilization in the galaxy that communicates with Earth in our galaxy through the Milky way.
Three American scientists Luis A. Anchordoqui, Susanna Weber and Jorge F. Soriano in an article published on the website of the University of Cornell, discussed the possibility of the existence of an alien civilization in the Milky Way Galaxy that communicates with humans.
Experts relied upon the Drake formula so that they could estimate the number of civilizations in our galaxy and according to their result, there is at least one extraterrestrial civilization that communicates with Earth through technology that could intercept or transmit radio emissions.
Moreover, scientists compare these planets where there are some potential civilizations with the rate of birth of heavenly bodies within the settled zone around their star.
Scientists agree on one potential thing, that the existence of the aliens is endagered by the powerful gamma ray bursts. Their note,however, will be verified with the help of TESS (Transiting Exoplanet Survey Satellite) and JWST (James Webb Space Telescope).
This research is additionally complicated by the fact that the scientists have come up to,which is the small percentage of intelligent alien civilizations in the Milky Way,about 0.5% of the total number of alien civilizations that may exist in the Universe. This is also their explanation of having not found any aliens so far.
The discovery of other civilizations will only be sucessfull if the scientists discover more of Earth’s “twin” planets.
In the research paper the scientists note that a new data is needed so that they can understand better the occurrence of exoplanets in the habitable zone, the early star formation rate models and GRB phenomenology.
Finding new Earth-like planets has been a challenge since these planets produce weaker signals. The technology for detecting these kinds of planets has been developed for the next generation space telescopes. So, NASA’s next search for planets is through Transiting Exoplanet Survey Satelite (TESS).
The NASA roadmap will continue with the launch of the James Webb Space Telescope (JWST) as well as with Wide Field Infrared Survey Telescope – Astrophysics Focused Telescope Assets (WFIRST-AFTA) early in the next decade. The discovery of alien life will probably take some more time, but the search is on its way.
In 2016, scientists adapted the Drake Equation data with data from Nasa’s Kepler satellite on the number of exoplanets that could harbour life. Researchers also adapted the equation from being about the number of civilizations that exist now, to being about the probability of civilization being the only one that has ever existed.
The study shows that unless the odds of advanced life evolving on a habitable planet are astonishingly low, then humankind is not the only advanced civilization to have lived.
In fact, the odds of an advanced civilization developing need to be less than one in 10 billion trillion for humans to be the only intelligent life in the universe.