| 2026-08-04 | Mysterious sight at night |
| 2026-06-17 | Subject of a declassified Pentagon document, in brief |
| 2026-03-29 | Purported sighting recorded by Puritan governor John Winthrop in 1639 |
| 2026-03-12 | What a drone might be mistaken for |
| 2025-10-15 | Frequent conspiracy subject |
| 2025-09-28 | Familiar initialism coined by a U.S. Air Force captain |
| 2025-08-18 | Strange sighting in the night sky |
| 2025-08-07 | What arrives in the film "Arrival" |
| 2025-04-07 | ET's vehicle |
| 2025-04-01 | E.T. arrived in one |
| 2024-12-18 | Something studied by the Advanced Aerospace Threat Identification Program, for short |
| 2024-11-07 | Subject of many a grainy video |
| 2024-09-05 | What a high-altitude balloon might be mistaken for |
| 2024-08-12 | Sci-fi ship |
| 2024-04-18 | Visitor from a faraway place |
| 2024-02-14 | Sci-fi sky sighting |
| 2024-02-09 | Frequent conspiracy subject |
| 2023-07-03 | Alien's ride, for short |
| 2023-03-29 | Supposed Roswell crasher |
| 2023-03-05 | It might turn out to be a drone |
| 2023-02-10 | Klaatu's vehicle in "The Day the Earth Stood Still" |
| 2023-01-31 | Mysterious sky sighting |
| 2022-08-04 | Dish seen around the world? |
| 2022-01-25 | Peculiar light in the sky, in brief |
| 2021-10-17 | Ship for 28-Across |
| 2021-10-14 | World traveler? |
| 2021-03-04 | Space oddity |
| 2021-02-24 | What Venus is sometimes mistaken for, due to its brightness |
| 2021-02-13 | Subject of many a conspiracy theory |
| 2020-11-08 | Sighting aptly found in "Are you for real?" |
| 2020-10-18 | What a weather balloon might be mistaken for |
| 2020-09-09 | Saucer, perhaps |
| 2019-11-27 | Sci-fi sighting |
| 2019-11-16 | Weather balloon, maybe |
| 2019-08-04 | Craft in a close encounter |
| 2018-12-26 | 1950s Project Blue Book subject, for short |
| 2018-07-11 | What a weather balloon might be mistaken for |
| 2018-06-04 | Saucer in the sky, for short |
| 2018-01-25 | Something encountered in "Close Encounters of the Third Kind" |
| 2017-12-23 | Dish that's out of this world? |
| 2017-11-11 | Subj. of some conspiracy theories |
| 2017-02-26 | Subject of a tinfoil hat theory |
| 2017-01-29 | X-File subject |
| 2016-09-11 | Craft the U.S. government has never recognized |
| 2016-06-13 | Otherworldly craft, for short |
| 2016-05-20 | "The Day the Earth Stood Still" craft |
| 2016-01-06 | Eerie sky sighting |
| 2015-07-09 | Cause of some 911 calls |
| 2015-02-09 | Alien's transport, for short |
| 2014-12-11 | Aerial anomaly |
| 2014-12-03 | Subject of certain amateur vids |
| 2014-10-07 | Martian's craft, say |
| 2014-09-24 | Night light, perhaps |
| 2014-09-20 | Saucer, perhaps |
| 2014-04-16 | One side in a close encounter |
| 2014-02-09 | Sci-fi sighting |
| 2014-01-08 | Frequent hoax subj. |
| 2013-12-15 | Subj. of some 911 calls |
| 2013-09-11 | "Independence Day" vehicle |
| 2013-07-25 | "V" vehicle |
| 2013-07-21 | Debatable sighting |
| 2013-06-18 | What an ET pilots |
| 2013-04-02 | Abduction destination in fanciful stories |
| 2013-03-24 | Sky light, for short? |
| 2013-03-17 | Mysterious blip |
| 2013-01-30 | Area 51 craft, supposedly |
| 2012-11-29 | Amateur film subject, maybe |
| 2012-08-19 | Radar anomaly |
| 2012-05-27 | ET carrier |
| 2011-12-23 | Overhead light, perhaps |
| 2011-11-13 | One encountered in a close encounter |
| 2011-10-27 | X-File subj. |
| 2011-10-03 | Sci-fi vehicle |
| 2011-05-07 | Sky light? |
| 2011-05-02 | Mysterious saucer |
| 2011-03-20 | Night light? |
| 2011-02-15 | Sci-fi sight |
| 2010-04-04 | Project Blue Book subj. |
| 2010-04-01 | Light sky, maybe |
| 2010-02-10 | Subj. of a certain conspiracy theory |
| 2009-11-10 | Transport for a 30-Across |
| 2009-10-12 | Sci-fi saucer |
| 2009-01-06 | Eerie sighting, for short |
| 2008-09-13 | Subject of some amateur videos |
| 2008-04-18 | One might be involved in a hoax |
| 2007-12-09 | Craft often shown landing on three legs |
| 2007-10-23 | ET's ride |
| 2007-07-23 | Roswell sighting |
| 2007-06-25 | Carrier of 13-Down |
| 2007-06-14 | Object of some amateur films |
| 2007-06-01 | Subject of some sightings |
| 2007-04-26 | Subject of many X-Files |
| 2007-04-23 | ET's craft |
| 2006-12-10 | Reason for a flood of calls to the police dept., maybe |
| 2006-04-04 | Flying saucer |
| 2006-03-25 | Tabloid subj. |
| 2005-09-07 | 36-Across craft |
| 2004-10-31 | One evidently not filing a flight plan |
| 2004-10-12 | ET's ride |
| 2004-06-05 | Martian rover? |
| 2004-05-27 | Popular tabloid subj. |
| 2004-05-02 | Cause of many calls to the police, often |
| 2004-04-11 | Subj. of many a faked video |
| 2003-12-01 | Martian's craft, for short |
| 2003-07-27 | Aerial anomaly, for short |
| 2003-05-06 | ET carrier |
| 2003-04-17 | Subj. of some amateur photography |
| 2002-11-04 | ET's craft |
| 2002-07-11 | Roswell sighting |
| 2002-02-18 | ET carrier |
| 2002-02-07 | Blinking light, maybe |
| 2001-10-28 | Amateur video subject, maybe |
| 2001-06-25 | Sci-fi vehicle |
| 2001-04-27 | It may be produced by swamp gas |
| 2001-04-18 | NASA concern |
| 2001-03-30 | Tabloid topic |
| 2001-01-04 | Amateur video subject, maybe |
| 2000-11-26 | Radar anomaly |
| 2000-09-01 | Mysterious visitor |
| 2000-08-30 | Tabloid photo subject |
| 1999-01-26 | Spooky sighting |
| 1998-02-23 | ET's craft |
| 1997-11-12 | ET's ride |
| 1997-09-26 | Subject of a grainy picture? |
| 1997-08-19 | Sky light? |
| 1997-02-26 | Sky sight |
| 1995-10-25 | Saucer, maybe |
| 1995-02-22 | Supermarket tabloid subject |
| 1994-11-12 | "X-files" phenomenon |
| 1994-07-16 | 1972 sci-fi TV series |
| 1994-01-13 | E.T.'s ship |