Cornell University astronomers hope to use the next generation of observatories to search for life on distant exoplanets from dead stars.
Scientists are sure that during the transit it will be possible to detect the “prints” of life – either current or past. In astronomy, transit is a phenomenon in which one cosmic body passes between an observer and another body. In this case, we mean the passage of these rocky, Earth-like planets in front of their dead stars – white dwarfs.
In preparation for such studies, scientists from Cornell University published in The Astrophysical Journal Letters a paper describing what astronomers can see during such observations.
Such types of planets in such systems can survive the death of their star. White dwarfs are the nuclei of stars that burned all their fuel.
Of course, it is logical to assume that any life in this case dies, but, theoretically, it can be reborn after the death of a star.
However, according to astronomer Lisa Kaltenegger, if astronomers manage to find signs of life, the question will be “did the death of a star survive the life or did it come back – the second genesis, so to speak?”
This will help scientists and published article. In fact, this is a catalog of chemical “portraits” of those worlds. A sign of life, as we know it, will be methane in combination with ozone or nitric oxide.