noun a being from outer space
adjective relating to or coming from outer space
The search for exterrestrial life forms is a key focus of many astronomers.
Exterrestrial planets are often the target of space exploration missions.
Many science fiction stories explore the concept of exterrestrial beings visiting Earth.
Exterrestrial organisms are a subject of study in the field of astrobiology.
In science fiction writing, the term 'extraterrestrial' is commonly used to refer to beings or life forms from outer space.
Astronomers study the possibility of extraterrestrial life in the universe by searching for habitable exoplanets and analyzing signals from space that may indicate the presence of intelligent civilizations.
Astrobiologists explore the potential for extraterrestrial life by studying extremophiles on Earth and considering the conditions necessary for life to exist on other planets.
NASA scientists investigate the existence of extraterrestrial life through missions to Mars, the search for microbial life on other planets, and the analysis of meteorites that may contain evidence of alien organisms.