I own a 2006 Chevy Cobalt SS with the 2.4 liter engine (not turbocharged). There seems to be oil leaking from the engine mount that is located under the air filter housing.
extraterrestrial(Noun) A being originating from outside of the Earth's atmosphere, from space, or from another planet; an alien. extraterrestrial(Adjective) Originating from outside of the Earth's atmosphere, from space, or from another planet; alien to Earth or its environment.
Ufo Meaning. It simply means an Unidentified object - at the time of that sighting in the sky. However when the object remains unidentified --- then it starts to have implications, especially when it belongs to an ever increasing number of such sightings...