July is the best time of the year to observe two distant star clusters that are relatively close to each other. Given their close proximity to the constellation Scorpius, these two star clusters are ...
"The number of black holes is roughly three times larger than expected from the number of stars in the cluster, and it means that more than 20% of the total cluster mass is made up of black holes.
Palomar 5 is a unique star cluster. In a new paper, astrophysicists show that distinguishing features of Palomar 5 are likely the result of an oversized black hole population of more than 100 of them ...
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