A History of Short Words

From the New York Times Crossword Puzzle

ETS

Thu, 22 Sep '22
Figures on "The X-Files," in brief
Tue, 20 Sep '22
U.F.O. pilots
Mon, 19 Sep '22
Aliens, in brief
Mon, 5 Sep '22
U.F.O. pilots, some believe
Wed, 17 Aug '22
"Star Wars" cantina patrons, for short
Thu, 11 Aug '22
Hypothetical entities, for short
Tue, 28 Jun '22
Travelers from afar, for short
Thu, 23 Jun '22
Mars rovers, in brief?
Sat, 28 May '22
Saucer contents, for short
Mon, 21 Mar '22
Flying saucer fliers, in brief
Sun, 20 Mar '22
Superman and others, for short
Thu, 17 Feb '22
Supposed creators of crop circles, for short
Tue, 18 Jan '22
Org. that creates the G.R.E.
Tue, 21 Dec '21
U.F.O. pilots
Thu, 16 Dec '21
French connections
Sat, 4 Dec '21
Big inits. in admissions
Sun, 21 Nov '21
Some dolls sold in a Universal Studios gift shop
Fri, 22 Oct '21
"Men in Black" antagonists
Sun, 3 Oct '21
Sci-fi travelers
Fri, 18 Jun '21
Org. that administers the G.R.E.
Thu, 20 May '21
Uranians, e.g.
Mon, 22 Mar '21
Those who are not among us (or are they?)
Thu, 14 Jan '21
Subjects of some conspiracy theories, for short
Sat, 9 Jan '21
Travelers from a faraway place, for short