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 ...
After decades of study, scientists sound genuinely optimistic about the possibility of detecting primordial black holes, which might explain dark matter.
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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