October 8, 2021
Every candle on your cake is a tiny imitation of the stars that made you possible.
The Double Cluster in Perseus
Birthday · October 8, 2021
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APOD published October 8, 2021. Credit: Jack Groves. A publication-date match, not a photo taken on your date. Independent of NASA.
This pretty starfield spans about three full moons (1.5 degrees) across the heroic northern constellation of Perseus. It holds the famous pair of open star clusters, h and Chi Persei. Also cataloged as NGC 869 (top) and NGC 884, both clusters are about 7,000 light-years away and contain stars much younger and hotter than the Sun. Separated by only a few hundred light-years, the clusters are both 13 million years young based on the ages of their individual stars, evidence that they were likely a product of the same star-forming region. Always a rewarding sight in binoculars, the Double Cluster is even visible to the unaided eye from dark locations. But a shroud of guitar strings was used to produce diffraction spikes on the colorful stars imaged in this vibrant telescopic view. Global Moon Party: Including APOD's Best Moon Images: Saturday, October 9
Image credit: Jack Groves