Galaxy universe solar system

What is the difference between galaxy and universe?

Galaxy: large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. The Milky Way measures about 100,000 light-years across, and is thought to contain 200 billion stars. Universe: the totality of known or supposed objects and phenomena throughout space; the cosmos; macrocosm.

Is the Solar System a minuscule part of a galaxy?

The solar system is a collection of planets, moons, asteroids, comets, and other celestial bodies that orbit a single star, in this case, the Sun. It is a minuscule part of a much larger system of stars and celestial bodies known as a galaxy.

Which planet orbits the Sun in our Solar System?

Our Earth orbits the Sun in our Solar System. Our Sun is one star among the billions in the Milky Way Galaxy. Our Milky Way Galaxy is one among the billions of galaxies in our Universe. You are unique in the Universe!

How many planets are in a galaxy?

This includes the 8 planets and their moons, the asteroids, the dwarf planets, all the Kuiper belt objects, the meteoroids, comets and interplanetary dust. Galaxy: large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space.

What are the external galaxies in the Milky Way galaxy?

Included in the discussion are the external galaxies (i.e., those lying outside the Milky Way Galaxy, the local galaxy to which the Sun and Earth belong), their distribution in clusters and superclusters, and the evolution of galaxies and quasars. For further details on the Milky Way Galaxy, see Milky Way Galaxy.

Why is our planetary system called the Solar System?

Our planetary system is called “the solar system” because we use the word “solar” to describe things related to our star, after the Latin word for Sun, "solis." Our solar system extends much farther than the eight planets that orbit the Sun. The solar system also includes the Kuiper Belt that lies past Neptune's orbit.