In any globular cluster, all its stars formed at the same time, from the same cloud of gas. The Milky Way has more than 150 known globular clusters; these objects are excellent tools for studying, for ...
Sagittarius A* is the supermassive blackhole at the center of the MilkyWay. As supermassive blackholes go, it is fairly quiet. It’s not creating any galaxy-wide tantrums that should ...
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The image of supermassive black hole Sagittarius A * was created using data from the Event Horizon Telescope Collaboration. At the same time several telescopes, including the Chandra X-ray Observatory ...
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