follow Dictionary.com

11 Trending Words of 2014

extraterrestrial intelligence

hypothetical extraterrestrial life that is capable of thinking, purposeful activity. Work in the new field of astrobiology has provided some evidence that evolution of other intelligent species in the Milky Way Galaxy is not utterly improbable. In particular, more than 250 extrasolar planets have been detected, and underground water may be present on Mars and on some of the moons of the outer solar system. These efforts suggest that there could be many worlds on which life, and occasionally intelligent life, might arise. Searches for radio signals or optical flashes from other star systems that would indicate the presence of extraterrestrial intelligence have so far proved fruitless, but detection of such signals would have an enormous scientific and cultural impact.

Learn more about extraterrestrial intelligence with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Word Value for extraterrestrial

23
24
Scrabble Words With Friends