Palomar 5, a seemingly calm star cluster, may hide a swarm of over 100 stellar-mass black holes. Spanning 30,000 light-years and located 80,000 light-years away, it provides clues about star cluster evolution and tidal stream formation. Unique in its loose structure and 20-degree tidal stream, Palomar 5 contrasts with typical dense globular clusters of...
Sagittarius A*, the black hole at the center of the Milky Way galaxyEHT Collaboration/CCA4.0Examining the stars in the night sky, it's unlikely you'd distinguish one as foreign. However, astronomers have identified a star near the supermassive black hole at the Milky Way's center, suggesting it originated in a smaller galaxy consumed by ours.Among...
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