Hubble just made a major breakthrough in the search for alien life

NASA used the sunlight beaming through Earth's atmosphere and bouncing off of the Moon to analyze our planet's atmosphere. The experiment was a sort of proof-of-concept that suggests we may be able to detect life on other worlds by analyzing the light passing through their atmospheres. In the distant future, missions to exoplanets may be determined by how likely they are to support life, based on what we can see from afar. Hubble took advantage of a total lunar eclipse to do a bit of science tha...