a billions of stars
It is likely that many stars within a globular cluster may have planets.
These are called Globular Clusters.They are not galaxies but instead are dense groups of stars that are part of a galaxy.Our Milky Way galaxy is estimated to have about 180 Globular Clusters in it. Many of them are near the center of our galaxy but some also orbit at the outer edges.For comparison, a Globular Cluster can contain 100's of thousands of stars and up to 1 million stars. Our Milky Way galaxy contains all those Globular Clusters plus over 100 billion more stars.
There are two types of star clusters. Globular clusters are tight groups of hundreds of thousands of very old stars which are gravitationally bound, while open clusters, are more loosely clustered, generally containing less than a few hundred stars, and are usually very young.
Yes its called the Local Cluster or Local Group, we have many minor Globular or Cluster Galaxies orbiting our own.
Many stars which are members of an open cluster are blue, hot stars, with relatively short life expectancies (a few hundred thousand years to a couple of million years life).
It is likely that many stars within a globular cluster may have planets.
Constellation or "asterism". The difference is that "constellations" are officially recognized by the International Astronomical Union, while an "asterism" is any other pattern or grouping of stars.
Whooooo there. That is a silly question. You or you teacher is forgetting about the total number of stars within a galaxy and cluster. Whilst a globular cluster has mainly older stars compared to an open cluster it will only contain a few billion stars, whereas a galaxy can have upwards of 500 billion stars, many of them old. So the answer is not definitive, but I think the answer you are looking for is global clusters.
Globular ClusterA huge group of stars that are close together is a star cluster. With many more stars it is a galaxy.
Globular ClusterA huge group of stars that are close together is a star cluster. With many more stars it is a galaxy.
A globular cluster has between 1,000 and a million stars gravitationally bound.Unfortunately, there are many types of nebula.EmissionReflectionDiffuse (Emission and Reflection joined)DarkPlanetarySupernovaEach with a varying number of stars from 1 to many. It all depends on the size of the nebula and how many new stars have been formed.In all likelihood, but not certain, a globular cluster will contain the most stars.
These are called Globular Clusters.They are not galaxies but instead are dense groups of stars that are part of a galaxy.Our Milky Way galaxy is estimated to have about 180 Globular Clusters in it. Many of them are near the center of our galaxy but some also orbit at the outer edges.For comparison, a Globular Cluster can contain 100's of thousands of stars and up to 1 million stars. Our Milky Way galaxy contains all those Globular Clusters plus over 100 billion more stars.
Actually the terms "Globular" and "Open" are not related to the number but the age of the stars. Globlular clusters are many old stars packed in spherical form (they look like hazy mothballs to the naked eye) and "open clusters" are many young stars formed close to each other. The constellation Pleiades is an example of open cluster.
A group of stars, dust and gases held together by gravity IS CALLED GALAXY
There are two types of star clusters. Globular clusters are tight groups of hundreds of thousands of very old stars which are gravitationally bound, while open clusters, are more loosely clustered, generally containing less than a few hundred stars, and are usually very young.
If there weren't so many stars it wouldn't be a galaxy, probably a cluster.
Yes its called the Local Cluster or Local Group, we have many minor Globular or Cluster Galaxies orbiting our own.