Question

What is a group of stars in the sky that form an imaginary picture?
$\left( A \right)$ Solar System
$\left( B \right)$ Moon
$\left( C \right)$ Constellation
$\left( D \right)$ Galaxy

Answer 1

Hint:- We will start this question by defining each option which is given in the question, i.e., Solar System, Moon, Constellation and Galaxy. Then from these definitions we can choose which option is the right answer to this question.

Complete step-by-step solution -

The Solar system is the gravitationally bound system of the Sun – an average star in the Milky Way Galaxy – and the other bodies that orbit it, either directly or indirectly. Of the bodies that orbit the sun directly, the largest are the eight planets, with the remainder being smaller objects, about 170 known planetary satellites (moon), there are dwarf planets such as Pluto, many asteroids, some have their own satellites, comets and other icy bodies and vast reaches of highly tenuous gas and dust known as the interplanetary medium.

The Moon, otherwise known as Luna, is an astronomical body orbiting Earth as its only natural satellite. It is the fifth-largest satellite in the entire Solar System, and furthermore the largest among planetary satellites also relative to the size of the planet that it orbits. It is widely accepted that it was formed when the Earth collided with a planet - sized object known as Theia. It is the second brightest object in the whole sky.

A constellation is an imaginary pattern in the night sky made by a group of stars. They are mostly named after mythological characters, people, animals and objects. In many parts of the world, people have come up with different shapes out of the same groups of bright stars. There are a total 88 constellations.

A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust and dark matter. The word galaxy is taken from the Greek word galaxias meaning ‘milky’, a reference to the Milky Way. Galaxies differ in size from dwarfs with somewhere around hundred million stars to giants having one hundred trillion stars, which orbits its galaxy’s center of mass.

Now, from above definitions it is very clear that Constellations are a group of stars in the sky that form an imaginary picture.

Hence, option C is the right answer.

Note – A constellation is a name given to a group of stars in the sky that make up a certain pattern. These types of questions are super simple but one should know all the definitions. If all the definitions are remembered this question can be done with the elimination method, i.e., by eliminating the wrong options to get the right option.