What do we mean by the Solar System?

The solar system refers to the Sun and the various heavenly objects that move around the Sun.

Name the heavenly bodies that move around the Sun?

Planets, satellites, asteroids, comets etc.

What is a planet?

A planet is a major heavenly body. For example, the Earth is a planet and so are Venus and Mars.

What is a star?

A star is a massive heavenly body which emits enormous quantities of energy and appears to be glowing.

How many stars are there in a galaxy?

On an average, there are about a hundred billion stars in each galaxy.

How many stars are there in our galaxy, the Milky Way?

About four hundred billion stars.

Which star is nearest to the Earth?

The Sun.

How many stars are bigger in magnitude than the Sun?

In the Milky Way galaxy alone, there are five billion stars larger in magnitude than the Sun.

which heavenly body is nearest to the Earth?

The Moon.