A Brief Introduction to Astrobiology
There is no definition of “astrobiology", every source goes to “exobiology." Exobiology is the study of any kind of alien life. Astrobiology serves to discover the origin of life, its evolution, and where it is evolving to. The search includes not only Earth, but other planets, solar systems and galaxies as well. There are many different fields of science involved in astrobiology, including, chemistry, geology, meteorology, oceanography and, of course, astronomy.