How do you distinguish a galaxy from a mere cluster of stars? That's easy, right? A galaxy is a large collection of millions or billions of stars, while a star cluster only has a thousand or so. Well, ...
Astronomers have made a fascinating discovery in the Ursa Major constellation that could potentially challenge our understanding of galaxies and star clusters. The object in question, UMa3/U1, has ...
New NASA-backed research using the Chandra X-ray Observatory suggests many small galaxies may lack supermassive black holes, ...
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