What galaxy has a cluster of stars?
Milky Way galaxy
Bottom line: Globular clusters are spherical collections of stars, orbiting mostly in the star halo of spiral galaxies. Our Milky Way galaxy has about 150 globulars, which contain some of our galaxy’s oldest stars.
Is a star cluster larger than a galaxy?
When comparing the two, a typical globular cluster might contain a mass of 100,000 Suns, whereas the Milky Way has nearly 1 trillion solar masses. In other words, the Milky Way Galaxy contains 10 million times more mass than a typical globular cluster.
What are clusters of stars called?
Star cluster, either of two general types of stellar assemblages held together by the mutual gravitational attraction of its members, which are physically related through common origin. The two types are open (formerly called galactic) clusters and globular clusters.
Is Earth in a star cluster?
Well, Earth is located in the universe in the Virgo Supercluster of galaxies. A supercluster is a group of galaxies held together by gravity. Within this supercluster we are in a smaller group of galaxies called the Local Group. Earth is in the second largest galaxy of the Local Group – a galaxy called the Milky Way.
Why are star clusters useful?
Star clusters are particularly important because they allow astronomers to check models of stellar evolution and the ages of stars. They therefore share the same initial metallicity so any effect of this on stellar evolution is effectively the same for the members of the cluster.
What are the three different types of star clusters?
The three basic types of clusters astronomers have discovered are globular clusters, open clusters, and stellar associations.
Which of these star clusters is oldest?
A team of astronomers using the Gemini-South telescope has discovered one of the oldest stellar clusters in the Milky Way. The team’s results date the globular cluster, named HP 1, at about 12.8 billion years, making its stars among the oldest ever found in our Galaxy.
What is group of galaxies called?
A galaxy group or group of galaxies (GrG) is an aggregation of galaxies comprising about 50 or fewer gravitationally bound members, each at least as luminous as the Milky Way (about 10 10 times the luminosity of the Sun); collections of galaxies larger than groups that are first-order clustering are called galaxy clusters.
How many galaxies are in a Virgo Cluster?
The Virgo Supercluster (Virgo SC) or Local Supercluster is the large galaxy cluster that contains the Virgo Cluster and the Local Group. At least 100 galaxies and clusters are in it.
What are facts about galaxies?
Read on for a range of interesting facts about galaxies. A galaxy is a massive group of stars, star clusters, interstellar gas and dust, and dark matter which is all gravitationally bound together.
What is the local galaxy cluster?
The Local Group is a small clustering of galaxies, a few million light-years across. Larger clusters of galaxies can contain hundreds of galaxies. Galaxies within a cluster are generally considered to be bound together by their mutual gravitational pulls. They each orbit around their common center of mass.
