EVERYDAY SCIENCE

Detailed explanation-1: -A huge collections of stars, dust and gas are known as galaxies. They contain several million of stars and their size can range from few thousands to several hundred thousands light years. They have different shapes and brightness and can be found alone, in pairs or in clusters. The galaxy of Earth is called Milky Way.

Detailed explanation-2: -A galaxy is a giant, spinning object made of gas, dust, and stars held together by gravity. Galaxies come in different shapes and sizes and can contain billions of stars. Most occur in groups that are also held together by gravity.

Detailed explanation-3: -Complete answer: Galaxies held together the group of stars, gas and dust.

Detailed explanation-4: -Most galaxies are organized into galaxy groups or clusters. The Milky Way is part of a group of galaxies called the Local Group. All of these systems are held together by a force called gravity. Gravity is an attractive, or pulling, force that exists between all objects in the universe.

Detailed explanation-5: -A constellation is a group of stars that appears to form a pattern or picture like Orion the Great Hunter, Leo the Lion, or Taurus the Bull. Constellations are easily recognizable patterns that help people orient themselves using the night sky. There are 88 “official” constellations.