At a glance
- Found in
- Constellations & Star Lore
- Related
- Caelum, Camelopardalis, Canes Venatici, Canis Major
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The story behind Cancer Constellation
Cancer belongs to Ptolemy's ancient constellation list and retains its zodiacal place in the modern sky map.
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Why Cancer Constellation matters
The open cluster M44, Praesepe or the Beehive, transforms an otherwise subtle constellation into a rewarding naked-eye and binocular field.
How to read Cancer Constellation
Find Cancer in the dark gap between Pollux and Regulus, then look for M44 as a misty patch under clear skies.
Cancer Constellation in practice: an example
Binoculars resolve the Beehive's haze into a loose swarm of stars near Cancer's center.
Where readings of Cancer Constellation go wrong
The astronomical constellation and the tropical astrological sign use different definitions and boundaries.
Sources and editorial method
Research references used for this entry include:
- International Astronomical Union: The Constellations - Official names, abbreviations, and boundaries for the 88 modern constellations.
- NASA Space Place: What Are Constellations? - NASA introduction to constellation regions, patterns, visibility, and seasonal sky changes.
- Source
- The Great Almanac Dictionary
- Category
- Constellations & Star Lore
- Last updated
- 2026-09-26
Find the Beehive inside the Crab
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Common questions
What is Cancer Constellation?
Cancer Constellation is a faint zodiac constellation represented as a crab and located between Gemini and Leo.
What do people get wrong about Cancer Constellation?
The astronomical constellation and the tropical astrological sign use different definitions and boundaries.
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