A study published in Astronomy & Astrophysics has identified four previously unknown primordial open cluster (OC) groups in ...

However, further research has revealed the galaxy cluster's mass was densest at two distinct points rather than one, according to the statement. "It was subsequently shown that the original Abell ...

Using the Hubble Space Telescope (HST), astronomers have observed a supermassive galactic open cluster designated Westerlund 1. Results of the study, published Jan. 28 on the pre-print server arXiv, ...

They are formed as a result of gravitational interactions between galaxies and star clusters. The observations ... Grillmair, The Multiple Extended Tidal Tails of NGC 288, arXiv (2024).