Friday, 3 July 2015

Solar System

There are 8 planets in our Solar system. They move around the Sun. The Sun is the largest object in the Solar system and holds everything in place by its gravity.

What causes Day and Night and how do we consider a Year can be explained by the terms Rotation and Revolution.

Find out about all these and Eclipses in detail below:

Mercury:
- Closest to the Sun
- Smallest planet
- Fastest planet
- Very dry, hot and airless

Venus:
- 2nd planet from the Sun
- Hottest planet
- Brightest planet in the night sky of Earth.

Earth:
- 3rd planet from the Sun
- 5th largest planet in Solar system
- Has 1 natural satellite - Moon
- Covered with 70% water
- We live on this planet

Mars:
- 4th planet from the Sun
- Closest to the Earth
- Reddish in color
- Has 2 moons

Jupiter:
- 5th planet from the Sun
- Largest planet in the Solar system
- Has the largest number of moons - 67

Saturn:
- 6th planet from the Sun
- Has 7 major rings and many lighter rings
- Has many moons - 62

Uranus:
- 7th planet from the Sun
- Does not have a solid surface
- 1st planet discovered from the telescope
- Has 27 moons

Neptune:
- 8th and farthest planet from the Sun
- Has 14 moons

Rotation: Earth spins around itself. The spinning is considered along an imaginary line through the middle of the earth. This line is called Axis. Earth completes 1 rotation in 24 hours. That is why we experience day and night.
This has to be explained with the help of a ball or the small globes available in the market.

Revolution: The earth moves around the sun on elliptical line called the Orbit. It takes 365 days to complete 1 full revolution. This is the reason we experience a Year and different seasons in a Year.

Lunar Eclipse: Sometimes during revolution, the Earth comes in between the Sun and the Moon. As a result, the moon does not receive light from the Sun and becomes invisible from the Earth to us. The Earth casts its shadow on the Moon. This is called Lunar Eclipse.

Solar Eclipse: In a Solar Eclipse the moon comes in between the Sun and the Earth. Due to this the light from the Sun to the Earth is blocked. The sky for the Earth turns dark. When the moon and the Sun are in a perfect line it is called Total Solar Eclipse.


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