Unsolved problem in astronomy:
Could life have arisen elsewhere?
What are the requirements for life?
Are there exoplanets like Earth?
How likely is the evolution of intelligent life?
Extraterrestrial life, alien life, or colloquially simply... Wikipedia
People also ask
What are the odds of life on another planet?
Is there life on other galaxies?
Is life in space possible?
Which planet can support life other than Earth?
Extraterrestrial life, alien life, or colloquially simply aliens, is life which does not originate from Earth. No extraterrestrial life has yet been ...
We are not alone in the universe. A few years ago, this notion seemed farfetched; today, the existence of extraterrestrial intelligence is taken for granted ...
5.2 Can Definitions of O-life or S-life be Generalized to Extra-Terrestrial Situations? ... life or evidence of past extraterrestrial life. For example, Steele et ...