Swiss scientists published on the Arxiv report, a pre-press of a study that alien astronomers can understand that there is life on Earth. To analyze exoplanets, terrestrial astronomers study the properties of their surface and atmosphere using infrared and ultraviolet radiation.
Due to the viewing angle and the particularities of the season, it would be problematic to identify the presence of life on Earth. The spectra of the Earth and its thermal radiation can correspond to both characteristics favorable to life and unfavorable characteristics. At the same time, it seriously differs in different parts of the planet and in different seasons.
This was demonstrated by analyzing data from an infrared probe aboard NASA’s Aqua satellite. This means that if alien astronomers from a distant galaxy use the same methods as those on Earth, it will be very difficult to analyze and interpret the data obtained.
Recently astronomers to found a potentially habitable planet covered in water. It is located one hundred light years from Earth.
Olesia Maevskaya
