Globular clusters 47
Tucanae are huge spherical cloud of old stars held together by gravity. They
are turning around the cores of galaxies, and satellites orbiting Earth. These
groups of stars contain very little gas and dust - it is believed that most of
the cluster has been driven by winds and explosions of stars it contains, or
has been torn by the interstellar gas has been interacting with the cluster.
Any remaining material coalesced into stars billions of years ago.
