Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  M 92  ·  NGC 6341
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M92, AstroDivers
M92
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M92, AstroDivers
M92
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Description

A sky full of diamonds condensed in an infinitely small but decidedly bright portion of space, there is a cluster of stars, with a global weight of approximately 330,000 solar masses crammed within a diameter of 84 light years in the constellation of Hercules. A giant formed 13.8 billion years ago, the oldest cluster known to date... it is practically almost the same age as the universe itself, this cluster, in fact, has often been used to define the "limit" of when everything it started. A giant full of stars held together by a very high force of gravity in a dense, very old and brilliant core. It is approaching us at a speed of 110 km/s and, given the distance that separates us of approximately 26,000 light years (i.e. 245 billion billion billion km), it will still be some time before we see it arrive at us. Our Milky Way is full of these wonders but this is definitely the oldest, 12,000 years ago (if anyone had managed to see it) it was considered the current Polar Star, indicating, that is, the North. It will also be the same thing in 14,000 years, this is due to its constant movement around our galaxy which will place it exactly north in several thousand years.
The formation of a star cluster is still mysterious, the generation of these stars extends for several hundred million years, a short period if compared to other deep space objects. After the formation of the first small clusters, these stars begin to interact with each other creating large gravitational forces, these forces attract other stars and so on in a practically infinite cycle.

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M92, AstroDivers