M44

The Beehive Cluster (also known as Praesepe, Latin for 'manger') is one of the nearest and most prominent open star clusters, located about 577 light-years away in the constellation Cancer. The cluster contains at least 1,000 stars spread across about 15 light-years of space. Its age is estimated at 600-700 million years, making it roughly the same age as the Hyades cluster in Taurus. The brightest members are orange giants and white main-sequence stars of spectral types A and F.

Visible to the naked eye as a hazy patch between Gamma and Delta Cancri, in the center of the constellation Cancer. Known since antiquity as the 'little cloud.' Like the Pleiades, the Beehive is best viewed with binoculars or the naked eye — its 1.5-degree diameter means it overfills most telescope eyepieces. Binoculars (7x50 or 10x50) provide a stunning view, revealing dozens of stars scattered across the field like a swarm of bees — hence the name. A wide-field telescope at low power (25-40x) is also effective. Best observed from January through May.

Known since antiquity — Aratus mentioned it around 260 BC, and Hipparchus included it in his star catalog around 130 BC. Ancient observers used it as a weather predictor: if the 'little cloud' was not visible on a clear night, rain was expected (due to high-altitude humidity dimming faint objects). Galileo resolved it into individual stars in 1609, counting about 40. Charles Messier cataloged it as M44 in 1769.