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This stellar swarm is M80 (NGC 6093), one of the densest of the 147 known globular star clusters in the Milky Way galaxy. Located about 28,000 light-years from Earth, M80 contains hundreds of thousands of stars, all held together by their mutual...

Why is space cold when it has so many stars?

... these extreme temperatures if they're so far away from our own experience of space? Ryan - So, the temperature of just ...