Beyond Earth-CBSE Full Notes Science Curiosity Class 6 In English-CBSE Notes


Last Updated : July 23, 2026

Explore NCERT Solutions for Class 6 science curiosity Chapter Beyond Earth Topic CBSE Full Notes with simple explanations and free ncert solution in English.

Class 6 Science Curiosity Curiosity Chapter 12 Beyond Earth CBSE Full Notes

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Beyond Earth-CBSE Full Notes Science Curiosity Class 6 In English-CBSE Notes

Beyond Earth

Page 2 of 3

CBSE Full Notes

Chapter 12. Beyond Earth

The Universe is full of amazing celestial bodies such as stars, planets, moons, galaxies, and comets. By studying them, we learn about space, the Solar System, and the world beyond Earth.

Detailed Notes

Astronomy

Astronomy: Astronomy is the branch of science that studies celestial bodies and the Universe.

Importance of Astronomy

(i) Helps us understand the Universe.

(ii) Supports space exploration.

(iii) Improves satellite communication.

(iv) Helps in weather forecasting.

(v) Develops scientific thinking.

Celestial Bodies

Celestial Bodies: Natural objects present in space are called celestial bodies.

Examples of Celestial Bodies

(i) Stars

(ii) Planets

(iii) Moons

(iv) Asteroids

(v) Comets

Celestial Body Example
Star Sun
Planet Earth
Natural Satellite Moon
Asteroid Asteroid Belt
Comet Halley's Comet

Stars

Stars: Stars are huge balls of hot gases that produce their own heat and light.

Characteristics of Stars

(i) Produce their own light.

(ii) Produce heat.

(iii) Appear to twinkle.

(iv) Are very hot.

(v) Are very far from Earth.

The Sun

The Sun: The Sun is the nearest star to Earth and the centre of the Solar System.

Importance of the Sun

(i) Provides heat and light.

(ii) Supports photosynthesis.

(iii) Drives the water cycle.

(iv) Controls weather and climate.

(v) Makes life possible on Earth.

Feature Description
Type Star
Position Centre of the Solar System
Main Function Provides heat and light
Average Distance About 150 million km (1 AU)

Constellations

Constellations: Constellations are groups of stars that form patterns in the night sky.

Common Constellations

(i) Orion

(ii) Ursa Major

(iii) Ursa Minor

(iv) Taurus

(v) Canis Major

Uses of Constellations

(i) Help identify directions.

(ii) Help identify seasons.

(iii) Help locate regions of the sky.

Pole Star (Polaris)

Pole Star: The Pole Star is a star that appears almost fixed in the northern sky.

Important Facts

(i) Also called Polaris.

(ii) Known as Dhruva Tara in India.

(iii) Helps find the north direction.

(iv) Used for navigation.

Key Points

(i) Astronomy is the study of celestial bodies.

(ii) Stars produce their own heat and light.

(iii) The Sun is the nearest star to Earth.

(iv) Constellations are patterns of stars.

(v) The Pole Star helps locate the north direction.

The Solar System

Solar System: The Solar System is made up of the Sun and all the celestial bodies that revolve around it.

Main Members of the Solar System

(i) The Sun

(ii) Eight Planets

(iii) Natural Satellites

(iv) Asteroids

(v) Comets

(vi) Dwarf Planets

The Eight Planets

Eight Planets: There are eight planets in the Solar System arranged according to their distance from the Sun.

Order Planet Important Feature
1 Mercury Nearest to the Sun
2 Venus Morning and Evening Star
3 Earth Only known planet with life
4 Mars Red Planet
5 Jupiter Largest Planet
6 Saturn Famous for its Rings
7 Uranus Ice Giant
8 Neptune Farthest Planet

Natural Satellites

Natural Satellite: A natural satellite is a celestial body that revolves around a planet.

Example

(i) Moon – Natural satellite of Earth.

Characteristics of Natural Satellites

(i) Revolve around planets.

(ii) Do not produce their own light.

(iii) Reflect the light of the Sun.

Asteroids

Asteroids: Asteroids are small rocky bodies that revolve around the Sun.

Characteristics of Asteroids

(i) Rocky in nature.

(ii) Smaller than planets.

(iii) Revolve around the Sun.

(iv) Mostly found between Mars and Jupiter.

Comets

Comets: Comets are icy bodies made of ice, dust, and rocks that revolve around the Sun.

Characteristics of Comets

(i) Contain ice, dust, and rocks.

(ii) Develop a bright tail near the Sun.

(iii) Move in elongated orbits.

(iv) Some comets return after fixed intervals.

Key Points

(i) The Solar System has the Sun and eight planets.

(ii) Mercury is the nearest planet to the Sun.

(iii) Neptune is the farthest planet from the Sun.

(iv) The Moon is Earth's natural satellite.

(v) Most asteroids are found between Mars and Jupiter.

(vi) Comets develop bright tails when they come near the Sun.

Galaxy

Galaxy: A galaxy is a huge collection of stars, planets, gas, dust, and other celestial bodies held together by gravity.

Examples of Galaxies

(i) Milky Way Galaxy

(ii) Andromeda Galaxy

Important Facts

(i) Our Solar System is in the Milky Way Galaxy.

(ii) A galaxy contains billions of stars.

(iii) Galaxies are held together by gravity.

The Universe

Universe: The Universe includes everything that exists, such as galaxies, stars, planets, and all of space.

Main Components of the Universe

(i) Galaxies

(ii) Stars

(iii) Planets

(iv) Natural Satellites

(v) Asteroids

(vi) Comets

Important Facts

(i) The Universe is extremely vast.

(ii) It contains billions of galaxies.

(iii) Scientists continue to explore the Universe.

Light Pollution

Light Pollution: Light pollution is caused by excessive artificial lighting, making it difficult to observe stars in the night sky.

Ways to Reduce Light Pollution

(i) Use lights only when needed.

(ii) Use downward-facing lights.

(iii) Switch off unnecessary lights at night.

(iv) Use energy-efficient lighting.

Applications of Space Science

Applications of Space Science: Space science helps improve our daily life through modern technology and scientific research.

Uses of Space Science

(i) Weather forecasting.

(ii) Satellite communication.

(iii) GPS and navigation.

(iv) Disaster management.

(v) Scientific research.

(vi) Space exploration.

Quick Revision

(i) The Sun is the nearest star to Earth.

(ii) Stars produce their own heat and light.

(iii) Planets revolve around the Sun.

(iv) The Solar System has eight planets.

(v) Earth is the only known planet that supports life.

(vi) Jupiter is the largest planet.

(vii) Saturn is famous for its rings.

(viii) The Moon is Earth's natural satellite.

(ix) Most asteroids are found between Mars and Jupiter.

(x) Comets develop bright tails near the Sun.

(xi) Our Solar System is part of the Milky Way Galaxy.

(xii) The Universe contains billions of galaxies.

(xiii) Light pollution makes it difficult to see stars.

(xiv) Space science is useful in communication, navigation, and weather forecasting.

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