ufology (n.)

1953, abbreviation of Unidentified Flying Object, which is attested from 1950.

word-forming element meaning "a speaking, discourse, treatise, doctrine, theory, science," from Medieval Latin -logia, French -logie, and directly from Greek -logia, from -log-, combining form of legein "to speak, tell;" thus, "the character or deportment of one who speaks or treats of (a certain subject);" from PIE root *leg- (1) "to collect, gather," with derivatives meaning "to speak (to 'pick out words')."

In philology "love of learning; love of words or discourse," apology, doxology, analogy, trilogy, eulogy, etc., Greek logos "word, speech, statement, discourse" is directly concerned.