| #23, aired 2024-01-02 | ELEMENTARY POP CULTURE $200: Superman was born on this planet named after one of the noble gases Krypton |
| #21, aired 2023-11-29 | FAR OUT $300: Ancient Egyptians called this planet "Her Desher", meaning, "the red one" Mars |
| #8845, aired 2023-04-07 | LANDING ON PLANET FRANCHISE $1000: Mongo:
Ah-ah! He'll save every one of us! Flash Gordon |
| #8767, aired 2022-12-20 | PLANET FEATURES $400: This speedy planet completes one revolution around the sun in 88 Earth days Mercury |
| #8575, aired 2022-02-11 | A PLACE IN THE SUN $2000: It looks like a different planet, but one of the hottest places on Earth is Dallol, in this largest Horn of Africa country Ethiopia |
| #8495, aired 2021-10-22 | PLANETARY SCIENCE $400: Mercury is one dense planet, with this interior section making up 55% of its volume vs. 16% for Earth the core |
| #8460, aired 2021-08-06 | OLD SYNONYMS $2000: An erring star or a wanderer was one of these planet |
| #8427, aired 2021-06-22 | IN THE SCI-FI & FANTASY SECTION $400: One big difference between this 1963 Pierre Boulle novel & the film version--no half-buried Statue of Liberty at the end Planet of the Apes |
| #8378, aired 2021-04-14 | MALFUNCTION $1200: After one group of scientists used kilograms & another used pounds, a probe sent to this planet in 1998 was lost in orbit Mars |
| #8356, aired 2021-03-15 | SPACED OUT $400: 76 years after its discovery, in 2006 Pluto was reclassified as one of these a dwarf planet |
| #8185, aired 2020-03-20 | THIS PLANET $1000: ...may have used its gravity to capture an independent object that would become one of its moons--Triton Neptune |
| #8129, aired 2020-01-02 | CHANGE ONE LETTER $800: Planet No. 2 changes one letter & becomes a place where an event is held Venus to venue |
| #8013, aired 2019-06-12 | OUR PLANET $400: The innovative use of drones helped the crew capture one of these, the largest animals on Earth, alongside her curious young a blue whale |
| #7922, aired 2019-02-05 | SCIENCE FICTION $1600: "The White Dragon" is one of Anne McCaffrey's novels about this alien planet & its sentient flying reptiles Pern |
| #7813, aired 2018-07-25 | ANIMAL PLANET $2000: Here's Dalí with Babou, his pet one of these New World wildcats--he used to tell people it was a painted house cat an ocelot |
| #7752, aired 2018-05-01 | WORLD MUSIC GRAMMYS $1200: 1991: Mickey Hart, one of the drummers for this legendary San Francisco rock band, for "Planet Drum" The Grateful Dead |
| #7748, aired 2018-04-25 | PLANET EARTH $800: Formed by heat deep underground, plutonic rocks are classified as this one of the 3 major kinds igneous |
| #7731, aired 2018-04-02 | PLANETARY FACTS $1000: It was the first one identified as a planet by mathematical calculations, not by observation Neptune |
| #7715, aired 2018-03-09 | OUR SOLAR SYSTEM $800: (Sarah of the Clue Crew shows an astronomical animation on the monitor.) Uranus' severe tilt & 84-year orbit mean that the decades-long seasons are extreme; most of the time, one-half is in total darkness or light, but during this 2007 event, every part of the planet saw some sunlight the autumnal equinox |
| #7652, aired 2017-12-12 | MAMMAL PLANET $2000: Sleeping dolphins shut down one of these at a time; when the right one naps, the left eye stays open & vice versa brain hemispheres |
| #7333, aired 2016-06-29 | TIME FOR SPACE $2,000 (Daily Double): Designated one of these objects like Pluto, distant Haumea spins so fast on its axis that it's twice as tall as it is wide a dwarf planet |
| #7263, aired 2016-03-23 | RECENT SCIENCE $1200: 2015 computer simulations suggest a collision between 2 of this planet's moons may have created its "F" ring Saturn |
| #7246, aired 2016-02-29 | WHICH PLANET? $1000: The one originally named Georgium Sidus, after King George III Uranus |
| #6783, aired 2014-02-26 | A BUG'S LIFE $200: Whether dung, goliath or other, one of every 4 animal species on the planet is one of these insects a beetle |
| #6768, aired 2014-02-05 | WE LOVE PLANET EARTH $400: The emmer type of this was one of the first cultivated crops over 10,000 years ago wheat |
| #6749, aired 2014-01-09 | PARKS $800: Lonely Planet says this landmark, also a title of a novel, "is one of the most festive places in Moscow" Gorky Park |
| #6570, aired 2013-03-22 | WE'RE ON MARS! $1600: In 2005 Opportunity found heat-shield rock, an iron-rich one of these space rocks, the first ever seen on another planet a meteorite |
| #6514, aired 2013-01-03 | 10 CHARACTERS, 5 AUTHORS $2000: Royal rainmaker Eugene Henderson,
Artur Sammler (it's his planet) Saul Bellow |
| #6431, aired 2012-07-30 | IT'S A NOISY PLANET $800: One sign of being around too-loud noise is if you hear this sound in your ears but there's no bell nearby ringing |
| #6427, aired 2012-07-24 | SPACE FIRSTS $600: On Nov. 14, 1971 Mariner 9 became the first spacecraft to go into orbit around another planet, this one Mars |
| #6413, aired 2012-07-04 | HALLEY'S CATEGORY $3,000 (Daily Double): (Kelly of the Clue Crew shows an astronomical animation on the monitor.) In 1677 Edmond Halley observed one of these rare astronomical events--the passage of a planet across the Sun's bright disk; in his case, it was Mercury a transit |
| #6241, aired 2011-11-07 | PLANET OF THE CORGIS $400: This author who wrote about a rabid St. Bernard owns corgis & featured one in his novel "Under the Dome" (Stephen) King |
| #6207, aired 2011-09-20 | ONE VOWEL ONLY $200: A planet of our solar system Mars |
| #6186, aired 2011-07-04 | THE ONE & ONLY $1000: Forget Pluto--this farthest planet from the sun is the only planet that can't be seen without a telescope Neptune |
| #6092, aired 2011-02-22 | JUMPING JUPITER! $200: Jupiter has one of these named Ganymede that's about the same size as the planet Mercury a moon |
| #5912, aired 2010-05-04 | ASTRONOMY & ASTROLOGY $600: This second-largest planet takes almost 30 years for one solar revolution Saturn |
| #5782, aired 2009-11-03 | DANGEROUS PLANET $200: In 1891 one of these battered the Island of Martinique & caused millions of dollars in damage a hurricane |
| #5782, aired 2009-11-03 | DANGEROUS PLANET $400: In June 1953 one of these fatally touched down in Worcester, Massachusetts, far from the Midwest a tornado |
| #5782, aired 2009-11-03 | DANGEROUS PLANET $800: Almost 200,000 buildings were damaged or destroyed when one of these hit Kobe, Japan in 1995 an earthquake |
| #5782, aired 2009-11-03 | DANGEROUS PLANET $1000: Sometimes called a tidal wave, one of these in December 2004 devastated large parts of Asia a tsunami |
| #5740, aired 2009-07-17 | 2 VOWELS, ONE CONSONANT $2000: This guy seen here is the second largest bird on the planet an emu |
| #5625, aired 2009-02-06 | THE NEAREST $200: ...planet to Earth is this one 26 million miles off Venus |
| #5589, aired 2008-12-18 | PLANET "EARTH" $200: It's been estimated there's a 63% chance of a 6.7 or greater one of these in the Bay Area by 2037 an earthquake |
| #5589, aired 2008-12-18 | PLANET "EARTH" $800: One of Jules Verne's 2 "terre"ible classics, from 1864 & 1865 From (the) Earth to the Moon (or Journey to the Center of the Earth) |
| #5153, aired 2007-01-24 | BASIC SCIENCE $800 (Daily Double): At last count, this planet in our solar system had 63 known moons Jupiter |
| #5047, aired 2006-07-18 | DUST TO DUST $800: In 2001 the Odyssey spacecraft observed one of the largest dust storms ever on this planet Mars |
| #4847, aired 2005-10-11 | THE SOLAR SYSTEM $400: Ares Vallis is one of the larger channels on the surface of this planet Mars |
| #4763, aired 2005-04-27 | ALSO A PLANET $1200: In 1911 in Tacoma, this confectioner founded what is today one of the USA's largest privately-owned corporations (Frank) Mars |
| #4639, aired 2004-11-05 | IT'S ALL GREEK TO ME $1200: This word is from the Greek for "wanderer"; the fact that the Earth was one wasn't figured out till later planet |
| #4621, aired 2004-10-11 | THE ADLER PLANETARIUM $2000: (Cheryl of the Clue Crew stands behind a large metal cylinder in the Adler Planetarium in Chicago.) This telescope was made by William Herschel & may be the actual one he used to discover this planet in 1781 Uranus |
| #4617, aired 2004-10-05 | DO YA THINK I'M "SEX"Y? $800: People magazine bestowed this honor on Nick Nolte in 1992; 2 years later, no one on the planet qualified Sexiest Man Alive |
| #4612, aired 2004-09-28 | SCIENCE & NATURE $400: Samuel Schwabe got deeply into sunspots after trying to find a planet crossing the sun closer than this one Mercury |
| #4491, aired 2004-03-01 | ANIMAL PLANET $600: A Cajun might call one of these, Mephitis mephitis, a bete puante or "stinky beast" a skunk |
| #4491, aired 2004-03-01 | ANIMAL PLANET $1000: A dorgi was the royal result when one of QEII's corgis bred with one of these dogs owned by Princess Margaret a dachshund |
| #4470, aired 2004-01-30 | ONE "PLANET" $400: Programs carried on this cable channel include "The Crocodile Hunter" & "Emergency Vets" Animal Planet |
| #4470, aired 2004-01-30 | ONE "PLANET" $800: This 1970 sequel continued its predecessor's distant future scenario about intelligent apes & docile humans Beneath the Planet of the Apes |
| #4470, aired 2004-01-30 | ONE "PLANET" $1200: This restaurant in which Arnold Schwarzenegger was an investor has locations from Acapulco to Auckland Planet Hollywood |
| #4470, aired 2004-01-30 | ONE "PLANET" $1600: 2-word descriptive term for Mercury, Venus, Earth or Mars because of their orbits nearest the sun the inner planets |
| #4470, aired 2004-01-30 | ONE "PLANET" $2000: The travel guidebooks from this company promise "Down-to-Earth Travel Information" Lonely Planet |
| #4377, aired 2003-09-23 | THE 1900s $1000: In 1998 the Hubble space telescope photographed the first one of these orbiting objects outside our solar system a planet |
| #4376, aired 2003-09-22 | OPERA SCARES ME $800: "Under the Double Moon" takes place on Undine, a watery one of these (We think it must be like Neptune) a planet |
| #4327, aired 2003-05-27 | ASTRONOMY'S GREATEST HITS $200: In 1995, 2 Swiss astronomers announced the first known one of these to orbit a star other than the sun planet |
| #4311, aired 2003-05-05 | GENERAL SCIENCE $400: Like our moon, only one side of Titan, this planet's satellite, always faces the planet's surface Saturn |
| #4296, aired 2003-04-14 | THE PLANETS $200: This ringed planet is the farthest one from earth that can be seen with the naked eye Saturn |
| #4220, aired 2002-12-27 | THE PLANET URANUS $400: Of 84, 184 or 284, the length in years of one orbit by Uranus around the sun 84 |
| #4065, aired 2002-04-12 | PLANET NAMES $2000: This root precedes -crat to mean one who rules by virtue of wealth Pluto |
| #4056, aired 2002-04-01 | APES OF THE PLANET $400: Your average adult mountain gorilla's day begins just after dawn; he feeds, then takes one of these about nnon a nap |
| #4056, aired 2002-04-01 | APES OF THE PLANET $800: (Sarah of the Clue Crew holds a young ape.) Of the great apes,
this is the one that spends most of its time in trees an orangutan |
| #4001, aired 2002-01-14 | THE PLANETS $200: One of the brightest of this sixth's planet's over 1,000 rings is only 500 feet thick Saturn |
| #3990, aired 2001-12-28 | ANIMAL PLANET $800: (Sofia of the Clue Crew at the Parrot Jungle in Miami.) Of fruit, leaves, or insects, it's the one that makes up most of an orangutan's diet fruit |
| #3958, aired 2001-11-14 | Astronomy.com $200: In the "Astro for Kids" section, click on images of your favorite planets; the one seen here symbolizes this planet Venus |
| #3949, aired 2001-11-01 | SPACE $300: (Sofia of the Clue Crew, dressed for a clean environment, delivers the clue from the Jet Propulsion Lab.) You're looking at a Cassini spacecraft, like the one en route to study Titan, a moon of this planet Saturn |
| #3932, aired 2001-10-09 | JPL $200: JPL spacecraft have visited every planet in our solar system except this one Pluto |
| #3920, aired 2001-09-21 | SCIENCE & NATURE $200: In March 1966 the USSR's Venera 3 became the first space probe to physically touch another planet, this one Venus |
| #3764, aired 2001-01-04 | ANIMAL PLANET? $500: It's a crude block of iron, or the type of iron cast in one Pig iron |
| #3686, aired 2000-09-18 | MERCURY $100: Tests show the planet Mercury has a thin one containing helium & sodium Atmosphere |
| #3628, aired 2000-05-17 | I SENSE A THEME $600: At one of these restaurants, you can get a Die Hard Daiquiri, a Cliffhanger or a Mr. Freeze's Margarita Planet Hollywood |
| #3546, aired 2000-01-24 | "ONE" PLANET $100: In Dumas, it follows the line "All for one" "And one for all" |
| #3546, aired 2000-01-24 | "ONE" PLANET $200: Referring to its operative lever, it's a derogatory term for a Las Vegas slot machine "One-armed bandit" |
| #3546, aired 2000-01-24 | "ONE" PLANET $300: Valerie Bertinelli spent 9 seasons playing Barbara Cooper on this sitcom One Day at a Time |
| #3546, aired 2000-01-24 | "ONE" PLANET $400: Proverbially, it's "another man's poison" One man's meat |
| #3546, aired 2000-01-24 | "ONE" PLANET $500: In 1962 Ken Kesey published this nonconformist classic "One Flew Over the Cuckoo's Nest" |
| #3272, aired 1998-11-24 | THE PLANETS $400: Since its 1846 discovery, this planet has yet to complete one trip around the sun Neptune |
| #3227, aired 1998-09-22 | MORE THAN "ONE" MOVIE $100: Louise Fletcher's nurse's uniform from this film is on display at Planet Hollywood in Beverly Hills One Flew Over the Cuckoo's Nest |
| #3180, aired 1998-05-29 | ROCK AROUND THE SOLAR SYSTEM $500: The Dead Kennedys sang "One-Way Ticket To" this smallest planet Pluto |
| #3134, aired 1998-03-26 | WHERE THE SUN DON'T SHINE $200: Bite into our planet & you'll find a molten outer one wrapped around a hard, central inner one a core |
| #2383, aired 1995-01-04 | ASTRONOMY $300: This innermost planet has been explored by only one spacecraft–Mariner 10 Mercury |
| #2347, aired 1994-11-15 | ASTRONOMY $1000: Voyager II discovered six more moons around this planet; one is bigger than the previously known Nereid Neptune |
| #1860, aired 1992-10-09 | SCIENCE $100: The mean distance of this planet from the Sun is one astronomical unit the Earth |
| #1693, aired 1992-01-01 | THE UNIVERSE $400: In July 1991 Brit. scientists reported finding the 1st known one of these outside our solar system a planet |
| #1583, aired 1991-06-19 | ASTRONOMY $100: This 9th planet's one moon has an orbit period of 6.4 days Pluto |
| #1461, aired 1990-12-31 | THE PLANETS $600: One theory holds that this planet's two moons are captured asteroids Mars |
| #1423, aired 1990-11-07 | ASTRONOMY $400: 17 days after this planet was discovered in 1846, William Lassell found one of its satellites, Triton Neptune |
| #1256, aired 1990-02-05 | TV PLANETS $100: On "Star Trek" one of Mr. Spock's parents was from Earth, the other from this planet Vulcan |
| #1231, aired 1990-01-01 | MOONS $400: Phobos circles Mars, & Phoebe circles this planet Saturn |
| #1011, aired 1989-01-16 | THE PLANETS $200: The new science of astrogeology deals with the structure of every planet known to man except this one earth |
| #861, aired 1988-05-09 | PLANET EARTH $400: Due to irregularities in the Earth's rotation, this amount of time was added to the end of 1987 one second |
| #473, aired 1986-10-01 | THE SOLAR SYSTEM $1000: Since its 1846 discovery, this planet has made only about three quarters of one revolution of the Sun Neptune |
| #410, aired 1986-04-04 | THE SOLAR SYSTEM $1000: Though all others rotate on a vertical axis this outer planet spins on a horizontal one Uranus |
