CLASS 10 · LEARNING KNOWLEDGE
Galaxies and large-scale structure – basics
How it works
Galaxies are huge collections of stars, gas, dust, and dark matter held together by gravity. There are different types of galaxies, such as spiral, elliptical, and irregular galaxies. Galaxies form larger structures such as galaxy clusters and superclusters. Between the galaxies there are large empty regions, called voids. Our Milky Way is part of the Local Group, which in turn belongs to a supercluster. The large-scale structure of the universe resembles a network of filaments and voids.
Note
Galaxies are classified according to shape and structure and, together with other galaxies, form larger structures; the distribution in the universe is not uniform, but network-like.
Galaxies are classified according to shape and structure and, together with other galaxies, form larger structures; the distribution in the universe is not uniform, but network-like.
An example
What is the name of a collection of many galaxies that are bound by gravity?
Such a collection is called a galaxy cluster. Gravity holds the individual galaxies together.
Try it yourself now
50 Exercises
To the learning unit →Own explanation and own practice exercises by AmyMath. Subject reference framework: Astronomy. The topic assignment may vary by federal state.