In the search for life on other planets, the presence of oxygen in a planet’s atmosphere is one potential sign of biological activity that might be detected by future telescopes. A new study, however, describes several scenarios in which a lifeless rocky planet around a sun-like star could evolve to have oxygen in its atmosphere.
Click here for original story, Study warns of ‘oxygen false positives’ in search for signs of life on other planets
Source: Phys.org