Hubble takes a picture of globular clusters

The Hubble Space Telescope of the American and European Space Agencies has detected a picture of a galaxy of globular clusters “Terzan 4” filled with many twinkling stars.
They are groups of stars bound together by their mutual gravity and can contain millions of individual stars. As this image shows, the core of a globular cluster is a dense, crowded field of stars that makes for stunning images.
The astronomers said: “It is almost impossible to distinguish individual stars in these dense clusters from one another using ground-based telescopes, however, space telescopes can separate them. Astronomers have taken advantage of Hubble’s clear vision to study the stars that make up globular clusters, and discover how they change these systems over time.”
This particular image came from Hubble observations designed to better understand the shape, density, age and structure of globular clusters near the center of the Milky Way. Unlike globular clusters found elsewhere in the sky, clusters close to the galactic center have escaped detailed observation due to clouds of gas and dust swirling around our galaxy’s core. These clouds block starlight and complicate astronomical observations in a process astronomers refer to as “extinction.”