The Virgo Supercluster, often just called the Local Supercluster
The Milky Way is part of the Virgo Supercluster.
The Milky Way is part of the Local Group, which is part of the Virgo Supercluster.
The Solar System contains the Earth-Moon system. The Milky Way galaxy contains the Solar System. The Virgo supercluster contains the Milky Way galaxy. The Universe contains the Virgo supercluster.
Until now, the Milky Way was believed to be one galaxy in the 2,000 that make up what's known as the Virgo "supercluster".
Virgo Supercluster
The Virgo Supercluster (in which the Milky Way is located) is about 200 million light years across.
The Earth is 93,000,000 miles from the Sun, on the edge of the Milky Way galaxy, in the Virgo supercluster.
No, not at all. Jupiter is part of the Solar System, which is part of the Milky Way galaxy, which is part of the Local Group (of Galaxies), which is part of the Local Superclusters. Jupiter's mass is nothing when compared to the mass of Superclusters.
There is no larger rotational group for galaxies. The Milky Way galaxy and the Andromeda Galaxy, as part of the Local Group, are moving generally in one direction, toward an unidentified central mass in the direction of the constellation Centaurus. (This may be a gravitational effect of the Shapley Supercluster.)
In 1918 he used Cepheid variables to estimate the size of the Milky Way. The Shapley Supercluster of galaxies is named after him as well.
Milky Way: About 100,000 light-years in diameter Universe: Unknown, but the observable Universe has a diameter of about 92 billion light-years. Solar System: There are different definitions for the limits of the Solar System; if you include the Oort Cloud, you would have a diameter of about 4 light-years. That's a radius of about 2 light years, taking you about half way to the nearest star. With many other commonly used definitions, the "Solar System" is much smaller.
Pluto is a part of our solar system, and our solar system is a part of the Milky Way Galaxy. Thus: Pluto is a part of the Milky Way.