Why are the Earth, Sun and Milky Way in the Virgo Galaxy? What other constellations are there?

First of all, let’s talk about what a galaxy is and what a constellation is.

Galaxies are huge celestial systems composed of a large number of stars, nebulae, interstellar matter, etc. in the universe that rely on gravity to combine. The Milky Way is just one of the hundreds of billions of galaxies in the observable universe.

A constellation is a group of closely spaced stars projected onto the celestial sphere. This sentence can be understood as: Constellations are artificially divided into areas with different shapes and areas in the sky when viewed from the earth. All stars, nebulae, galaxies, etc. located in this area belong to this constellation.

The earth belongs to the solar system, and the solar system is just an ordinary planetary system in the Milky Way. The Milky Way is at least 100,000 light-years across and contains at least 200 billion stars like our sun.

Through observation of the sky, galaxies are also distributed in groups (or clusters) in the universe. Some galaxies are relatively close to each other and form a galaxy group. The distances between each galaxy group are relatively far. The Milky Way and the neighboring Andromeda Galaxy, the Large and Small Magellanic Clouds, and more than 500 large and small galaxies*** form the Local Galaxy Group. Among them, the Milky Way and the Andromeda Galaxy are the two largest galaxies in the Local Galaxy Group. All galaxies in the Local Group cover an area about 10 million light-years in diameter.

The Local Group of galaxies belongs to the larger Virgo Supercluster. The Virgo Supercluster (also called the Local Supercluster) is a supercluster of galaxies that includes the Local Group. It is shaped like a pancake and covers an area about 200 million light-years in diameter. The Virgo Supercluster contains about 100 galaxy groups and clusters, with the Virgo Galaxy Cluster (another galaxy cluster different from the Local Group) located approximately at its center. The Local Group of galaxies is located on the edge of the Virgo Cluster and continues to move away from the Virgo Cluster. That is to say, the Local Group in which our galaxy is located is only a peripheral member of this group.

This super galaxy cluster is called the "Virgo Super Galaxy Cluster" because when viewed from the Earth, most of the galaxies in this super galaxy cluster where the Milky Way is located are located in the direction of Virgo, serving as the center of the Virgo Super Galaxy Cluster. The Virgo galaxy cluster is also in this constellation. Virgo is the largest constellation of the zodiac, with an area of ??1294.43 square degrees. It is the second largest constellation among the 88 constellations in the sky, accounting for 3.318% of the entire sky.

The Milky Way is not in the Virgo galaxy. There are many galaxies in Virgo, including M49 (elliptical), M58 (spiral), M59 (elliptical), M60 (elliptical), M61 (spiral), M84 (elliptical), M86 (elliptical), M87 (elliptical), famous radio sources ) and M90 (spiral) and M104 (Sombrero Galaxy, an elliptical galaxy), which together form the Virgo Galaxy Cluster, which does not include the Milky Way.

In other constellations, there are also many galaxies, galaxy groups and galaxy clusters.

Say this. Earth → Solar System → Milky Way → Local Galaxy Group → Virgo Supercluster (including the Local Galaxy Group and Virgo Galaxy Cluster).