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Stars And The Solar System

Stars And The Solar System
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Celestial Objects

  • Celestial objects are those which exist in the space like moons, stars, planets, etc. 

The Moon

  1. Phases of the moon – The phases of moon refer to the various type of shape of the moon that is visible during different days in a month.
  2. Full moon day – Full moon can be seen on this day.
  3. New moon day – The moon becomes thinner after the full moon day. The visibility of the moon disappears on the fifteenth day. This day is called a new moon day.
  4. The moon’s surface – The surface of the moon is dusty with different size of craters. Moon does not have any water and atmosphere.

class 8 solarsystem

 

 

The stars

  • The twinkling in the sky is caused by the stars.
  • The nearest star to our planet is the sun which has a distance of around 150 million from earth.
  • Earth axis has a star in its direction which is known as pole star.

class 8 solarsystem

 

 

Constellations

  • When a group of stars form different known shapes then it is called as constellations.
  1. Ursa major
  • There are seven stars in this constellation
  • The big dipper is also a name given to Ursa Major.

 

  1. Orion
  • This constellation is visible only in winter during late evenings.
  • The belt of the hunter is represented by the middle stars in the Orion.
  • It is also known as the Hunter.

 

  1. Sirius
  • In the sky the brightest star is Sirius.
  • When a line that is a straight pass through the belt of Orion's three middle stars then the location of Sirius can be traced.

 

  1. Cassiopeia
  • The popular constellation of the northern sky.
  • It is visible during an early night in winters.
  • It appears like a distorted letter M or W.

The solar system

  • The solar system comprises of the sun and various other celestial objects which exist in the space.
  • The various objects like comets, planets, meteors, etc. are part of the solar system.
  • The order of the planets is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

class 8 solarsystem

The sun

  • The nearest star out of all the stars which exist in the universe is the sun.
  • The main source of light and heat is the sun.

class 8 solarsystem

The Planets

  • Planets do not have their own light like the sun.
  • With respect to the stars, the planets keep changing their positions.
  • The smallest planet and the nearest planet to the sun is mercury, also known as Budh.
  • Only the planet earth has life existence.

 

Recap

  • Celestial objects are those which exist in the space like moons, stars, planets, etc.
  • The twinkling in the sky is caused by the stars.
  • When a group of stars form different known shapes then it is called as constellations.
  • The solar system comprises of the sun and various other celestial objects which exist in the space.
  • The nearest star out of all the stars which exist in the universe is the sun.

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