Because of this, the scientists behind the study were able to get a look at 44 stars in the "Dragon Arc," a part of the Abell 370 galaxy cluster. The arc is about 6.5 billion light-years away from ...

This discovery explains how massive galaxy clusters evolved into the dormant, giant elliptical galaxies seen today, shedding light on the co-evolution of black holes and galaxies. Galaxy clusters ...

Sgr A*, at the heart of the Milky Way and clocking in at 4.3 million solar masses, is the closest supermassive black hole we have access to. It's also on the quiescent end of the activity scale, which ...

A "missing link" black hole in Omega Centauri ... in the center of this dense cluster to high speeds. "We have long known about supermassive black holes at galaxy centers and smaller stellar ...

One possible answer is inside-out growth: As star formation within a galaxy expands outward from the nucleus, less gas is being deposited by supernovas near the accreting black hole, and it ...

The plot has just thickened in the mystery tale about the unseen mass skulking inside the largest cluster of stars in the Milky Way galaxy. In the heart of Omega Centauri, a huge glob of ...

Results of the observational campaign, presented December 20 on the preprint server arXiv, could help us better understand the merging processes that take place between galaxy clusters.

which astronomers spotted inside the IRS 13 star cluster, just a tenth of a light-year from Sagittarius A*, the supermassive black hole at the heart of the Milky Way galaxy. If scientists can ...

A fluffy cluster of stars spilling across the sky may have a secret hidden in its heart: a swarm of over 100 stellar-mass black holes. The star cluster in question is called Palomar 5. It's a ...

"The Spiderweb protocluster is an ideal laboratory for investigating the relationship between black holes and star formation ... is the first ancient galaxy cluster ever found and has been studied ...