Hubble has previously found some evidence of black holes in this intermediate range, ... A Hubble Space Telescope image of the globular star cluster Messier 4.

A Hubble Space Telescope view of the globular star cluster, Messier 4, home to several hundred thousand densely-packed stars. Astronomers now suspect that a black hole weighing as much as 800 ...

A new image from ESO’s La Silla Observatory in Chile shows the spectacular globular star cluster Messier 4. This ball of tens of thousands of ancient stars is one of […] ...

Hubble's unique capabilities have now been used to zero in on the core of the globular star cluster Messier 4 (M4) to go black-hole hunting with higher precision than in previous searches.

They looked at Hubble's observations of Messier 4 from a 12-year period, watching how stars moved near the cluster's core, "like bees swarming around a hive," NASA explained.

Galaxies come in all shapes and sizes, and the galaxies most pleasing to the eye are always in the most recognizable shapes. Dramatic spirals with … ...

Astronomers followed up on the Gaia observations with 12 years of Hubble data on stars in Messier 4, allowing the team to pinpoint a substantial mass. "We have good confidence that we have a very ...

A Hubble Space Telescope image features the star cluster Messier 79 doing its best snow globe imitation. The mass of stars is a 'globular' cluster, after all.