Archaeology · Observations · Science
The search for extraterrestrial life is currently built on two pillars: chemistry and radio signals
The search for extraterrestrial life is currently built on two pillars: chemistry and radio signals. Astrobiologists, astronomers and planetary scientists use spectroscopy to look in the atmospheres of distant planets for oxygen and methane, which may point to life in general, even if only bacteria. Radio astronomers listen for radio