Cancer Zodiac Sign Trivia
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57 free Cancer Zodiac Sign trivia questions with answers — science & nature quiz, new questions added Sep 2026.
This Cancer zodiac sign trivia quiz covers the fourth sign from three directions. The astrology questions ask about the crab's dates, its Moon rulership and water element, its cardinal modality, its opposite sign, the planet exalted in it, why some astrologers say 'moon children', and the scarab and turtle that stood in for the crab in Egypt and Babylon. The astronomy questions turn to the faint constellation itself: Tarf and Acubens, the two donkey stars, the Beehive Cluster that Galileo resolved into forty stars, the ancient cluster Messier 67, the star with the longest name in the sky, and the planetary system of 55 Cancri with its planets named for Galileo, Brahe and Harriot. The mythology is Heracles' second labour: the giant crab Hera sent to bite him while he fought the Hydra of Lerna, the heel that crushed it and the goddess who set it among the stars. There are also questions on the Tropic of Cancer, Dante's line about the crab, and how the sign is drawn on the cathedrals of Chartres and Amiens. Difficulty runs from easy to expert and is shown on each question, so it works for a Cancer birthday, a pub round or a stargazing night. Every answer was checked against a reference page and each question carries its citation. Try our Zodiac, Leo and Gemini quizzes for more.
30 of 57 questions with answers and explanations. Play the quiz
Q 01In astrology, people born under Cancer are said to care most about which area of life?
Home and family
Home and family mean everything to the sign, and astrologers read the crab's shell the same way: a guarded exterior around a nurturing and fiercely loyal interior.
Q 02Cancer is which sign in the order of the zodiac?
4th
4th in the zodiac's order, Cancer begins where spring ends: the Sun enters the sign at the June solstice, when daylight in the north is at its peak.
Q 03Which celestial body rules the sign of Cancer?
The Moon
The Moon stands in astrology for comfort, mothering and emotion, which is where Cancer gets its reputation as the zodiac's great nurturer.
Q 04Cancer belongs to which classical element?
Water
Water is astrology's element of feeling, which is why Cancer, first of the three water signs, is read as the one who senses what other people are feeling.
Q 05What is Cancer's modality in astrology?
Cardinal
Cardinal comes from the Latin cardo, a hinge: the four such signs are the ones the year turns on, each opening a season, and Cancer's is northern summer.
Q 06Which sign sits opposite Cancer on the zodiac wheel?
Capricorn
Capricorn begins around December 22, half a year after Cancer's June start, so the two face each other across the wheel like midsummer and midwinter.
Q 07Which of these birthdays falls under the sign of Cancer?
July 4
July 4 sits in the middle of Cancer's run, from about June 22 to July 22; the sign opens at the June solstice, so its first day is the longest of the northern year.
Q 08Each sign, Cancer included, covers 30 degrees of which path across the sky?
The ecliptic
The ecliptic is the Sun's yearly path against the stars, and Cancer's slice runs from 90 to 120 degrees along it; the slices are fixed to the seasons, so precession has slid each sign off the constellation it was named for.
Q 09Cancer is one of the six signs of which polarity?
Negative
Negative is no insult here: astrologers alternate the twelve signs between positive and negative, and the negative six are also called feminine, receptive or yin.
Q 10Which planet, long called the 'Greater Fortune', is traditionally said to be exalted in Cancer?
Jupiter
Jupiter's exaltation in Cancer is one of astrology's oldest rules: Babylonian omen texts already gave each planet a 'secret place', and the king of the planets had his beside the Crab.
Q 11The Tropic of Cancer runs across which desert?
The Sahara
The Sahara straddles the line for a reason: air that rises near the equator sinks again around these latitudes, arriving dry after shedding its rain over the tropical forests.
Q 12In ancient Egypt the sign of Cancer was conceived as which creature?
A scarab beetle
A scarab beetle stood for the Sun's daily rebirth: Egyptians pictured the god Khepri rolling the Sun across the sky the way a dung beetle rolls its ball.
Q 13The Swedish name for Cancer, 'Kräftan', means what?
Crayfish
Crayfish is the word's everyday sense, as in the kräftskiva parties Swedes throw each August to eat them; in older Swedish the same word named the disease too, as 'cancer' does in English.
Q 21Which two constellations flank Cancer along the zodiac?
Gemini and Leo
Gemini and Leo sit either side, in the same order the signs follow through the calendar: the Twins' dates come just before Cancer's and the Lion's just after.
Q 22How does Cancer rank for brightness among the zodiac constellations?
It is the dimmest
It is the dimmest of the twelve: not one of its stars reaches third magnitude, and under city lights the whole figure vanishes from view.
Q 23Ancient skywatchers took the sudden fading of the Beehive Cluster in a clear sky as a warning of what?
A coming storm
Q 14What is the sign of Cancer called in Hindu astrology?
Karka
Karka is Sanskrit for crab, a sign India shares with the West because Greek astrology reached it in Sanskrit translations in the early centuries AD, though some scholars argue the Indian system grew up on its own.
Q 15The American Heritage Dictionary traces the word 'Cancer' to an Indo-European root with what meaning?
Hard
Hard is the sense that dictionary gives the root kar-, which also lies behind the English word 'hard' itself; on that reading the crab was named for its shell, though other scholars trace the Latin word to a different root.
Q 16In Greek myth, the crab attacked Heracles while he was fighting which monster?
The Lernaean Hydra
The Lernaean Hydra was said to sprout two new heads for every one struck off, so the crab's ambush from the swamp caught Heracles at the worst possible moment.
Q 17Which goddess placed the crab among the stars after Hercules killed it?
Hera
Hera was the hero's great enemy, so she rewarded the crab's loyal if useless attack with a place among the stars; Roman writers give the same credit to Juno.
Q 18How did Heracles kill the giant crab?
He crushed it under his foot
He crushed it under his foot in most retellings, furious at being nipped in the middle of a fight; the mythographer Apollodorus says only that he killed it.
Q 19The crab struck during Heracles' second labour, but which beast had he faced first?
The Nemean Lion
The Nemean Lion had a hide no weapon could pierce, so Heracles choked it with his bare hands and afterwards wore its skin as a cape.
Q 20Which Greek physician is credited with first describing tumours as 'karkinos', the Greek for crab?
Hippocrates
Hippocrates gets the credit, likely because tumours with their swollen veins looked like crabs to him; the Roman writer Celsus later turned the word into the Latin 'cancer', so sign and disease share a name.
A coming storm: the cluster is so faint that the first gathering haze blots it out while brighter stars nearby still shine, so Aratus and Pliny both took its vanishing from a clear-looking sky as an early warning.
Q 24What does Acubens, the common name of Alpha Cancri, mean?
The claw
The claw is what its Arabic name means, and the star does mark the Crab's southern pincer; the same name was long shared with the star on the northern one.
Q 25In the medieval 'zodiac man' diagram, which part of the body was Cancer said to govern?
The chest
The chest belonged to the Crab: the scheme laid the twelve signs down the body in calendar order from head to feet, and the midsummer sign landed on the breast.
Q 26The stars Asellus Borealis and Asellus Australis represent what?
Two donkeys
Two donkeys, a northern and a southern: in Greek myth gods rode them into battle, where their braying, a sound the enemy is said never to have heard, started a rout, and they were afterwards put among the stars.
Q 27Which god and his tutor rode into battle on the animals now marked by the Aselli?
Dionysus and Silenus
Dionysus and Silenus are the riders in one version; the beasts' unfamiliar cries were said to have panicked the gods' enemies, and the pair were set in the sky as thanks.
Q 28Long before it was nicknamed the Beehive, Messier 44 was 'Praesepe', Latin for what?
Manger
Manger is the usual sense, a feeding trough for the two stars that flank the misty patch; the same Latin word could also mean a hive, which suits the cluster's modern nickname.
Q 29Which ancient astronomer's star catalogue describes the Beehive as a 'nebulous mass' in the Crab's breast?
Ptolemy
Ptolemy listed it in the Almagest among a handful of 'nebulous' objects, with no way of knowing the misty patch was really a swarm of stars too faint to separate by eye.
Q 30Ancient Chinese astronomers saw the Beehive Cluster as what?
A ghost riding in a carriage
A ghost riding in a carriage is one Chinese picture of it: the cluster lies in the lunar mansion named Ghost, and its pale glow was also likened to a heap of corpses.