Celestial Bodies Night Sky and the Planets for Class 1 Science

The Earth we live on is a part of the solar system. This concept will introduce the learners to the other planets of the solar system and the celestial bodies found in the sky.

After reading the concept, students will be able to:

• Identify and name the solar system planets.
• Give examples of celestial bodies visible in the night sky.
• Define a constellation.

Each concept is explained to class 1 students using descriptions, illustrations, and concept maps. After you go through a concept, assess your learning by solving the two printable worksheets given at the end of the page.
Download the worksheets and check your answers with the worksheet solutions for the concept Night Sky and the Planets provided in PDF format.

What do you see when you look at the sky? Is it the same during day and night?

In this topic, we will learn about the celestial bodies we see in the sky day and night.

Celestial Bodies:

• These are heavenly bodies that together form the universe.
• All celestial bodies are not visible to us.
• We can see the celestial bodies which are near to the Earth.
  Examples:  Planets, stars, and moons.

1.Sun and the Solar System :

 

2. Solar System Planets:

• Eight planets and the Sun together make the solar system.
• Planets can be defined as the celestial bodies that revolve around the Sun.
• The series of planets that move around the Sun is—

Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

• Mercury is the smallest, whereas Jupiter is the largest planet in the solar system.
• Earth is the only planet in the solar system where life exists.
• Venus is the hottest planet in the solar system.
• Saturn has a ring-like structure around it.

3. Moon:

 

4. Night Sky:

• Moon is the biggest heavenly body visible in the night sky.
• Several stars are visible in the night sky along with the Moon.
• A group of stars is called a constellation.

• The other star seen in the night sky is called a Pole Star.
• It is the brightest star in the night sky and is used by astronomers to identify directions.
• It is located in the North direction.

 

Did You Know?

• Neptune, Uranus, Saturn, and Jupiter are also called gas planets.
• The Moon takes a time of about 28 days to complete one revolution around Earth.
• Mercury and Venus do not have any Moons.
• Earth completes one revolution around the Sun in a year which is equal to 365 days.