August 7, 2025
Light takes eight minutes to travel from the Sun to the Earth. It took the universe 13.8 billion years to make you.
The Double Cluster in Perseus
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APOD published August 7, 2025. Credit: Ron Brecher. A publication-date match, not a photo taken on your date. Independent of NASA.
This stunning 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 (right) 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 both clusters were likely a product of the same star-forming region. Always a rewarding sight in binoculars or small telescopes, the Double Cluster is even visible to the unaided eye from dark locations.
Image credit: Ron Brecher