| 2026-08-25 | *4th |
| 2026-06-11 | Destination for 2025's ESCAPADE satellites |
| 2025-11-13 | Milky Way maker … or Milky Way object |
| 2025-09-30 | Planet whose name is also a candy company |
| 2025-08-03 | 2004 landing site for Spirit |
| 2025-07-22 | Planet whose evening temperatures plunge to -200°F |
| 2025-02-02 | Red rover home |
| 2023-05-02 | Destination for NASA's Perseverance rover |
| 2022-08-31 | See 14-Across |
| 2022-02-07 | Locale of the Perseverance rover |
| 2021-05-23 | What two Vikings have explored |
| 2020-09-24 | Land of Opportunity? |
| 2020-08-10 | Destination of the rover Perseverance |
| 2019-10-31 | Damage |
| 2019-07-05 | What areology is the study of |
| 2018-10-07 | Counterpart of Venus |
| 2018-09-30 | Home to the 72,000-foot volcano Olympus Mons |
| 2018-01-23 | Neighbor of the asteroid belt |
| 2017-12-06 | Mount Olympus, at 72,000 feet, is its highest peak |
| 2017-06-10 | Milky Way maker |
| 2017-05-05 | Opportunity's on it |
| 2017-02-22 | Where Matt Damon was stranded in a 2015 film |
| 2016-01-21 | Chocolate treat since 1932 |
| 2015-11-27 | Curiosity's locale |
| 2015-11-06 | Where Spirit landed in 2004 |
| 2015-03-11 | Twix maker |
| 2014-01-14 | Target of NASA's Rover mission |
| 2013-09-29 | Setting of the 2012 film "John Carter" |
| 2013-06-21 | Roman 18-Across |
| 2012-07-30 | Fourth rock from the sun |
| 2011-10-06 | Maker of 31-Across |
| 2011-09-03 | "The Sands of ___" (Arthur C. Clarke's first science fiction novel) |
| 2011-08-17 | Milky Way maker |
| 2011-03-13 | Viking's destination |
| 2010-05-22 | Rover's home |
| 2009-11-11 | Phoenix landing site, 2008 |
| 2008-08-05 | Location of Olympus Mons |
| 2007-12-03 | Home of the invaders in Wells's "The War of the Worlds" |
| 2007-06-03 | Viking landing site |
| 2005-11-02 | Deimos orbits it |
| 2005-07-05 | Neighbor of Earth |
| 2005-04-15 | ___ rover |
| 2004-12-29 | Snickers alternative |
| 2004-11-06 | Land of Opportunity? |
| 2003-08-10 | Twix candy maker |
| 2002-10-06 | Maker of Twix and Starburst |
| 2002-09-25 | Pathfinder explored it |
| 2002-03-08 | Viking's destination |
| 2002-02-20 | "Invaders From ___" (1953 sci-fi) |
| 2001-11-25 | Pathfinder's target |
| 2001-10-31 | Sci-fi setting |
| 2000-11-07 | Phobos orbits it |
| 2000-06-21 | Third-smallest of nine |
| 2000-05-15 | "Total Recall" setting |
| 2000-02-22 | One of the worlds in "The War of the Worlds" |
| 1999-12-22 | Where the Vikings landed |
| 1999-09-29 | Global Surveyor's destination |
| 1999-09-26 | Milky Way maker |
| 1998-12-30 | "The War of the Worlds" base |
| 1998-10-21 | Olympus Mons site |
| 1998-05-30 | Sojourner's resting place |
| 1997-12-28 | Either "M" of M&M's |
| 1997-09-08 | Pathfinder's locale |
| 1997-06-08 | Olympus Mons's locale |
| 1996-12-06 | "The War of the Worlds" base |
| 1996-05-09 | Kind of bar |
| 1995-08-20 | Snickers company |
| 1995-08-06 | "War of the Worlds" base camp |
| 1995-05-10 | Damages |
| 1994-09-15 | _____ Observer (1992 mission) |
| 1994-05-15 | Flash Gordon serial site |
| 1994-02-23 | Viking touchdown site |