The Universe
Universe means everything that exists. It consists of the whole space in which we live, that is, the earth together with all the planets and stars.
The origin of the universe is explained by the Big Bang Theory According to this theory, everything in the universe was initially hot and dense and slowly it started cooling and condensing. The systems that were formed thus are called galaxies) There are millions of galaxies in the universe The Milky Way and Andromeda are examples of galaxies
Galaxy
We see the sky decorated with moon, planets and stars at night. But why do we not see these glittering stars during the day time? The sun's bright light makes them disappear during the day.
Night sky
Try This
Sketch the sky and other heavenly bodies you observe at night or the Milky Way. The Milky Way is the name given to the faint band of light that stretches across the sky that we see at night. The heavenly bodies in the Milky Way are the sun, the moon, the stars,
The planet and the comets star are the big balls of fire that give out heat and light. The sun is one of the star in the milky way which gives out its own light and heat many of the star are much bigger than the sun but they appear very small as they are very far away from the earth in the sky star group in a particular way. The formation of star in group is called a constellation full stop the movement of air in the atmosphere of the earth
Satellite or moon this are heavenly bodies that revolt around the plan in the solar system. This satellite are known as followers as they follow the planet in their orbits around the sun planets planets are heavenly bodies that revolved along the sir the planets are also known as wanderers they move around the sun on a set but known as orbit they do not produce heat or light but reflect the light of the sun mercury Venus Earth Mars Jupiter Saturn Uranus and Neptune are the eight planet that move around the sun different from the stars while planets revolt around the Sun the stationery and the produce their own light and Heat
The Solar System
(The sun is the nearest star to our earth) The sun and all the planets along with satellites form the solar system. The word solar means of the sun
Neptune
uranus
sun
mars
Saturn
venus
earth
jupiter
Do you know?
There are millions of galaxies in the universe
2 The rays of the sun take 8 minutes to reach the earth's surface.
3 Pluto, which was the ninth planet in the solar system, lost its position
and has been declared a dwarf planet since September 2006. Constellations helped farmers in ancient period to decide seasons for planting and reaping crops.
Let's Recall
The universe is a vast open space that contains billions of clustered stars A galaxy is a massive cluster of hundreds and millions of stars orbiting around a centre.
Stars are big balls of fire. They produce heat and light.
The sun and all the planets along with their satellites form the solar system
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