A gargantuan galaxy cluster with a core bursting with new stars has been found: an incredibly rare find. The discovery is the first to show that gigantic galaxies at the centers of massive clusters can grow significantly by feeding off gas stolen from other galaxies.
Galaxy clusters are vast families of galaxies bound together by gravity. Our own galaxy, the Milky Way resides in the small galaxy group called Local Group, which itself is a member of the massive Laniakea supercluster.
Galaxies at the centres of clusters are usually made of stellar fossils — old, red or dead stars...
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