50 Fun Facts About Gemini

Gemini belongs to which of astrology's four classical elements?

Air. Astrologers tie the air signs to ideas and conversation, which is where Gemini gets its reputation as the chatterbox of the zodiac.

Gemini is which sign in the order of the zodiac?

3rd. The zodiac year opens with Aries at the March equinox, so Gemini's turn comes third, just as northern spring gives way to summer.

Which planet is the traditional ruler of Gemini?

Mercury. Astrologers gave the sign to the planet named for the quick-footed messenger god, which is why Geminis are cast as fast thinkers and faster talkers.

Which sign sits opposite Gemini on the zodiac wheel?

Sagittarius. Opposite signs sit half a year apart on the wheel, so the Sun reaches the Archer in late November, six months after Gemini season begins.

Gemini has which modality (quality) in astrology?

Mutable. The four mutable signs fall at the tail end of a season, so astrologers read them as adaptable and restless rather than stubborn.

Under the tropical zodiac the Sun is in Gemini between roughly which dates?

May 22 to June 20. The tropical zodiac is pinned to the seasons, so Gemini's month always runs out at the June solstice, the longest day of the northern year.

Which tarot card do readers link with the sign of Gemini?

The Lovers. Card six shows a pair, echoing the sign's doubled nature, and readers take it to mean a choice between two paths is coming.

Through most of Gemini's astrological dates, the Sun actually appears in front of which constellation?

Taurus. Earth's slow axial wobble has slid the signs about a month off their stars since the zodiac was fixed some 2,000 years ago, so the Sun reaches Gemini's stars only around June 21.

Gemini lies between which two other zodiac constellations?

Taurus and Cancer. Orion is the easier signpost on a winter night: a line from its bright foot star Rigel up through red Betelgeuse points straight at Castor and Pollux.

Pollux is the brightest star in Gemini, yet Johann Bayer gave it which Greek-letter designation in 1603?

Beta. Bayer handed Alpha to the fainter Castor instead, which makes Gemini one of the constellations whose Alpha star is not its brightest.

Castor, the name of one Gemini twin, is also the Latin word for which animal?

Beaver. The word lives on in science, where beavers form the genus Castor, and in castoreum, the musky secretion once sold as medicine and perfume.

Pollux is notable as the closest star of what kind to the Sun?

Red giant. Pollux has used up the hydrogen in its core and swollen to about nine times the width of the Sun, a preview of what our own star will do one day.

The Gemini Observatory's twin telescopes sit on mountaintops in Hawaii and which other country?

Chile. With one telescope in each hemisphere, the identical pair can between them reach the entire sky, north and south.

What did astronaut John Young smuggle aboard Gemini 3 in his spacesuit pocket in 1965?

A corned beef sandwich. He and Gus Grissom managed a bite each before tucking it away again, worried about crumbs floating loose around the cabin.

Days before Christmas 1965, the Gemini 6 crew smuggled a harmonica aboard and played which tune from orbit?

Jingle Bells. Schirra and Stafford first radioed that they had spotted a UFO, hinting it was Santa Claus, then broke into the carol on a tiny harmonica and a string of bells.

Zeta Geminorum brightens and fades on a steady 10-day beat, making it a naked-eye example of which type of star?

A Cepheid variable. Henrietta Leavitt found that the slower such a star pulses, the brighter it truly is, which turned Cepheids into yardsticks for measuring the distance to other galaxies.

M35, a star cluster in Gemini, looks about as wide as what?

The full Moon. It can be glimpsed without a telescope, as a hazy patch by Castor's foot on a dark winter night.

The planetary nebula NGC 2392 in Gemini is said to resemble the head of a person wearing what?

A parka. The nickname that hood inspired, the Eskimo Nebula, was retired by NASA in 2020 as insensitive, so the agency now sticks to the catalogue number.

Geminga, a powerful gamma-ray source in Gemini, puzzled astronomers for 20 years before proving to be what kind of body?

A neutron star. Astronomers could not match it to anything known at other wavelengths, so it was named with a pun on the Milanese for 'it's not there'.

The Geminid meteor shower lights up the sky every year in which month?

December. Around the 13th and 14th the shower can top 100 meteors an hour, and its radiant is up by mid-evening, so nobody has to wait until the small hours for a good show.

The Geminids are debris from which object, named for the boy who lost control of the Sun's chariot?

The asteroid 3200 Phaethon. Nearly every other meteor shower is shed by an icy comet, so a rocky parent came as a surprise, and astronomers now describe this one as a rock comet.

In the 2019 thriller Gemini Man, which actor plays both an aging hitman and the younger clone sent to kill him?

Will Smith. Director Ang Lee used motion capture and digital effects to de-age his star, so the actor spent the film trading blows with a computer-made version of his younger self.

Which Greek name for the twins Castor and Pollux means 'sons of Zeus'?

The Dioscuri. The title flatters one of them: in most tellings only Pollux was fathered by the god, while Castor was the son of a mortal king.

Who was the mother of the mythological twins Castor and Pollux?

Leda. The Spartan queen still circles her seducer: astronomers named a small moon of Jupiter after her, Jupiter being the Roman name for Zeus.

Which mortal king of Sparta was the father of Castor?

Tyndareus. He spent years in exile after his own brother seized the throne, and got Sparta back only when Heracles killed the usurper.

Castor and Pollux were said to have hatched from an egg alongside which famous sister?

Helen of Troy. The fourth child of the clutch was Clytemnestra, who grew up to help murder her husband Agamemnon the moment he came home from the war.

In what form did Zeus seduce the mother of Castor and Pollux?

A swan. Michelangelo painted the scene for the Duke of Ferrara in 1530, fell out with the duke's side and never handed it over; the original is now lost and known only from copies.

Sailors believed Castor and Pollux appeared to them as which phenomenon?

St. Elmo's fire. Pliny wrote that two of the glowing lights on a ship's rigging promised a safe voyage, while one on its own was an omen that the vessel might sink.

Castor and Pollux sailed as crew members aboard which hero's ship?

Jason. The twins were credited with bringing his Argo safely through its homeward voyage, and ever after they were honoured as the protectors of sailors in peril.

Which sport was the mythological twin Pollux famous for?

Boxing. When the bullying King Amycus forced every passing stranger to fight him, Pollux took up the challenge and beat the king at his own game.

Castor Troy and his brother Pollux are the villains of which 1997 John Woo action film?

Face/Off. Nicolas Cage plays Castor Troy, a terrorist whose face is surgically swapped with that of the FBI agent hunting him, so he and John Travolta spend most of the film playing each other.

Twins Cameron and Tyler Winklevoss, founders of the crypto exchange Gemini, famously sued over the creation of which company?

Facebook. The brothers claimed Mark Zuckerberg stole their idea for a campus social network at Harvard, and settled in 2008 for a deal worth $65 million, a fight later dramatised in The Social Network.

What did Pollux choose when Zeus offered him a way to stay with his dying brother?

To share half his immortality. Zeus let the brothers stay together by splitting their time, so in the best-known telling they spend one day among the gods on Olympus and the next among the dead.

Castor and Pollux, brothers on a rebel camera crew, appear in the final book of which series?

The Hunger Games. In Mockingjay the brothers film Katniss for rebel propaganda, and Castor does the talking for both: Pollux is an Avox, silenced by the Capitol as a punishment.

Castor and Pollux carried off which hero's mother in revenge after he kidnapped their sister?

Theseus. The twins invaded his kingdom while he was away, freed their sister, carried his mother Aethra off to Sparta as a slave, and left his rival on the throne of Athens.

Three columns survive from the Temple of Castor and Pollux in which part of Rome?

The Roman Forum. Legend says the twins rode with the Romans at the Battle of Lake Regillus, then appeared in the city watering their horses at a spring, and the temple rose on that spot.

The Babylonians pictured the twins of Gemini as armed gods guarding an entrance to what?

The underworld. Lugal-irra and Meslamta-ea were so trusted as gatekeepers that Assyrians buried small figurines of the pair at their own doorways to stand guard.

Which singer and guitarist named his 2022 album Gemini Rights, home of the hit Bad Habit?

Steve Lacy. Bad Habit sat at number two for four weeks behind Harry Styles's As It Was before finally knocking it off the top, giving him his first Billboard number one.

Which planet did William Herschel discover in 1781 while examining the stars of Gemini?

Uranus. Herschel first took it for a comet, then tried to name his planet after King George III; a German astronomer's suggestion, the Greek god of the sky, won out instead.

Clyde Tombaugh discovered which body in 1930 on photographic plates centred on Delta Geminorum?

Pluto. Tombaugh was a farm boy with no college degree: he had mailed the observatory his drawings of Mars and Jupiter, made with a homemade telescope, hoping for advice, and got a job offer instead.

Gus Grissom nicknamed his Gemini 3 capsule Molly Brown, after a musical about a survivor of which disaster?

The sinking of the Titanic. The joke was on himself: his first capsule, Liberty Bell 7, sank after splashdown in 1961 and nearly drowned him, so this time he borrowed the name of The Unsinkable Molly Brown.

Why did NASA name its mid-1960s spacecraft programme after Gemini?

It carried two astronauts. Neither had much room, yet one crew spent two weeks in orbit together, longer than a round trip to the Moon would take.

Project Gemini flew between which of these programmes?

Mercury and Apollo. The first programme put one American at a time into space and the second aimed at the Moon; the one in between rehearsed the docking and spacewalks a Moon trip would need.

Who became the first American to walk in space, on Gemini 4 in June 1965?

Ed White. He floated on a gold-wrapped tether for 23 minutes, steering with a handheld gas gun that ran dry in the first three, and hauled himself around on the line after that.

Who commanded Gemini 8, which made the first docking in orbit and then tumbled out of control?

Neil Armstrong. A thruster stuck open and spun the capsule about once a second; he stopped the tumble with the re-entry thrusters, which forced an emergency splashdown ten hours after launch.

Which rocket launched the Gemini spacecraft?

Titan II. It began as a nuclear missile: NASA modified the two-stage weapon to carry people, and test-flew it empty before putting a crew on top.

Gemini 5's mission patch carried the slogan '8 Days or Bust' across a picture of what?

A covered wagon. The crew chose it to mark a pioneering flight, NASA's first with a mission patch, but bosses feared a shorter flight would be called a bust and had cloth sewn over the slogan.

Which technology company named its family of large language models Gemini in 2023?

The name was reportedly chosen partly for the twin-team merger of DeepMind and Google Brain that built it.

On a 1966 Gemini 12 spacewalk, which future moonwalker took the first selfie in open space?

Buzz Aldrin. The picture came from a spacewalk lasting more than two hours, and in 2014 he posted it online with the words BEST SELFIE EVER.

Gemini is one of 48 constellations listed in the Almagest by which astronomer of Roman Egypt?

Ptolemy. He called his book the Mathematical Composition; Arabic translators knew it as 'the greatest', al-majisti, and Europe took the title from them.