Question

What is the fundamental component of the universe known as?
A. Galaxy
B. Universe
C. Asteroids
D. Meteors

Answer 1

Hint: Universe consists of stars, constellations, planets and galaxies. Universe refers to all of space and time and their contents.
A galaxy is a system of stars, interstellar gas, dust, and their solar system held together by the force of gravitation. There are uncountable numbers of galaxies that make the Universe.

Complete answer:
A galaxy is a large system of billions of stars, and clouds of dust and gases. We cannot imagine how big the universe is. There are millions of galaxies that constitute the Universe. Thus, a galaxy is known as the fundamental component of the universe.

So, the correct answer is “Option A”.

Additional Information:
Apart from the stars, planets and satellites, there are a number of tiny bodies which also move around the sun. These bodies are known as asteroids. Scientists also assume that asteroids are parts of a planet which exploded many years back. Asteroid belt is a region in the Solar System which is found between orbits of Mars and Jupiter which consists of many asteroids.
There are small pieces of rocks in space which move around the sun are called meteoroids. Sometimes these meteoroids come near the earth and have a tendency to drop upon it. When a meteoroid enters the Earth’s atmosphere and is known as a meteor. Meteors, due to friction with the air, get heated up and burn. It results in a flash of light. Sometimes, a meteor falls on the earth without being completely burnt and creates a hollow and then it is named as meteorite.

Note:
Milky Way Galaxy is a large spiral system consisting of several hundred billion stars. The earth lies within the Milky Way Galaxy.
Earth revolves around the sun. The sun is located at the centre of the solar system. It is very large and is made up of extremely hot gases. It binds the solar system by gravity.