Of the dozens of open star clusters scattered across the autumn sky, none is finer through binoculars than NGC 869 and NGC 884, the famous Double Cluster in Perseus. Even from suburban backyards, this ...
The double open clusters NGC 884 (left) and NGC 869 in the constellation Perseus. They occupy a wide area approximately the size of three full moons in the sky, making them visible to the naked eye in ...
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Seeing Double in Perseus
After a long, hot summer, these beautiful and cool October evenings are just made for stargazing! Midway up in the northeastern sky after dark at this time of year lies the constellation of Cassiopeia ...
The autumnal equinox occurs at 2:19 P.M. EDT. On this date, the Sun appears directly above the equator and the Northern and Southern hemispheres receive the same amount of sunlight. The autumnal ...
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