Your probably referring to a galaxy as these are gravitational bound unlike the largest of cosmological structures super clusters and filaments.
Galaxies, or groups of them.
You might include the entire universe ... but current data questions that.
A cluster. A galaxy.
Galaxy
a galexy
It is called a stellar nebula.
nebulas
Yes, stars are born when gravity pulls gas and dust together from a nebula.
Galaxy
That is a galaxy.
Galaxy
a galexy
It is called a stellar nebula.
Nebulas.
nebulas
it is a nebula
Yes, stars are born when gravity pulls gas and dust together from a nebula.
Such groups exist at different levels:* Star clusters * Galaxies * Galaxy clusters * Superclusters
A galaxy.
That sounds like a galaxy. It could also be a galaxy cluster or a supercluster.