galaxy cluster, Sloshing and celestial collisions

There is a supermassive black hole at the center of nearly every big galaxy—including ours, the Milky Way (it’s called ...
"By putting together the individual results, like in a puzzle, we reconstruct the formation history of these systems." ...
Astronomers have performed a multiwavelength study of nine open cluster candidates. As a result, they found that all of them ...
A star has been spotted shooting away from the heart of our galaxy at around 500 kilometres per second, giving astronomers ...
But astronomers previously discovered that the core of the Phoenix cluster appeared surprisingly bright, and the central galaxy seemed to be churning out stars at an extremely vigorous rate.
Scientists say they've uncovered the "largest known galactic structure," which spans a mind-boggling 1.4 billion light-years.
A new image shows Arp 105, a dazzling ongoing union between an elliptical galaxy and a spiral galaxy drawn together by ...