Download Globular Cluster in Canes Venatici

M3
Globular Cluster in Canes Venatici
M3 is high in the eastern sky in April and May. Located near the southern border of
Canes Venatici, M3 is about midway between Arcturus and Alpha Canum Venaticorum (also known as Cor Corolli, situated just under the handle of the Big Dipper).
M3 is about ½° from a star of similar magnitude.
One of the brightest and biggest globular clusters in the northern hemisphere, M3
is easy to spot in binoculars; a 4-inch scope will resolve the outer portions but it
takes an 8-inch scope to resolve the core. One reference notes that M3 is notable
for its extensive halo and radiating arms of stars.
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M3
Globular Cluster in Canes Venatici
QUICK FACTS
Distance: 35,000 light
years
Diameter: 214 light
years
Magnitude: 6.4
Angular Size: 21 minutes
GLOBULAR CLUSTERS are large, densely concentrated masses of between
10,000 and one million stars. More than 100 globular clusters have been observed amidst the Milky Way galaxy, but there may be many more hidden in
the galactic dust clouds. Globular clusters have been discovered surrounding other galaxies as well.
The stars in globular clusters are spaced much closer together (several
stars within each cubic light year) than in the Sun’s neighborhood. If the
earth orbitted a star located in a globular cluster, the next nearest star
would be light months away rather than light years.
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