1. SOLAR SYSTEM
THE SUN AND THE
EIGHT PLANETS

2. OUR SOLAR SYSTEM

3. THE SUN
THE SUN IS THE CENTRAL PART OF
THE
SOLAR SYSTEM.IT IS A SOURCE OF
HUGE
ENERGY.WE CALL THE ENERGY
,RECEIVED
FROM THE SUN AS SOLAR ENERGY.IT
PRODUCES LIGHT OF ITS OWN.IT IS,
THUS,
CALLED A LUMINOUS BODY.IT IS ALSO
VERY
LARGE AND MASSIVE AS COMPARED TO

4. MERCURY
MERCURY(BUDH) IS THE PLANET
CLOSEST TO THE SUN.IT IS A
DRY,HOT AND ALMOST AIRLESS
PLANET.IT IS ALSO THE SMALLEST
PLANET.THERE IS NO
ATMOSPHERE,SIMILAR TO THE
EARTH’S ATMOSPHERE AROUND
THIS PLANET.THE LIGHT AND HEAT
OF THE SUN,THEREFORE,REACH
THE SIDE OF MERCURY FACING SUN
DIRECTLY.THIS SIDE BECOMES
VERY HOT. THE OTHER REMAINS

5. VENUS
THE NEXT PLANET NEAREST TO SUN IS VENUS
(SHUKRA).ITS
SIZE IS NEARLY SAME AS THAT OF THE EARTH.IT
RECEIVES A
MUCH LARGE AMOUNT OF HEAT AND LIGHT FROM THE
SUN AS
COMPARED TO THE EARTH.VENUS HAS A VERY THICK
ATMOSPHERE.THIS REFLECTS BACK A LARGE AMOUNT
OF
SOLAR ENERGY THAT FALLS ON IT.VENUS
IS,THEREFORE,THE
BRIGHTEST OBJECT SEEN IN THE SKY AFTER THE SUN
AND
THE MOON.ITS THICK ATMOSPHHERE ALSO TRAPS A
LARGE
AMOUNT OF THE SOLAR ENERGY REACHING ITS
SURFACE.IT IS
BECAUSE OF THIS TRAPPING THAT IS THE HOTTEST OF
ALL

6. EARTH
EARTH(PRITHVI)IS THE THIRD PLANET IN
TERMS OF
INCREASING DISTANCE FROM THE SUN.THE
SURFACE OF EARTH,AS SEEN BY US,APPEARS
TO BE
FLAT.THIS IS DUE TO ITS LARGE SIZE.FROM
FAR OFF
SPACE,THE EARTH APPEARS LIKE A
BEAUTIFUL
BLUE AND GREEN SPHERICAL BALL.THIS IS
DUE TO
THE REFLECTION OF SUNLIGHT FROM THE
WATER
AND LANDMASS PRESENT ON ITS
SURFACE.BECAUSE OF THIS,THE EARTH IS

7. MARS
MARS(MANGAL)IS THE PLANET
THAT LIES BEYOND THE EARTH
IN OUR SOLAR SYSTEM.IT IS
ALMOST HALF THE SIZE OF
EARTH.ITS ATMOSPHERE IS
MUCH THINNER THAN THAT OF
THE EARTH.IT APPEARS TO BE
RED AND WE OFTEN CALL IT AS
THE RED PLANET.

8. JUPITER
JUPITER(BRIHASPATI) IS THE
FIFTH PLANET IN TERMS OF
DISTANCE FROM THE SUN.IT IS
THE LARGEST OF ALL THE
PLANETS.

9. SATURN
SATURN(SHANI) IS THE SIXTH
AND THE SECOND LARGEST
PLANET OF THE SOLAR
SYSTEM.SATURN HAS A
SYSTEM OF BEAUTIFUL RINGS
SURROUNDING IT.IT
IS,THEREFORE,ALSO KNOWN
AS THE RINGED PLANET.

10. URANUS
URANUS(ARUN) IS THE
SEVENTH PLANET AND ALSO
HAS A RING SYSTEM.URANUS
IS ALSO THE THIRD LARGEST
PLANET IN THE SOLAR SYSTEM
AND A ‘GAS GIANT’ WITHOUT
ANY SOLID SURFACE.

11. NEPTUNE
NEPTUNE(VARUN) IS THE
EIGHTH PLANET FROM THE
SUN IN THE SOLAR
SYSTEM.NEPTUNE IS ALSO
KNOWN AS A WINDY PLANET
AS VERY STRONG WINDS BLOW
ON ITS SURFACE.

12. PROFILE OF THE
PLANETS(PART 1)
S NO. PLANET NAME MEAN MASS PERIOD
DISTANCE (EARTH OF ORBIT
FROM SUN =1)
(MILLION
KM)
1. MERCURY 58.3 0.06 88 days
2. VENUS 107.7 0.8 224.7 days
3. EARTH 149.6 1.0 365.24
days
4. MARS 227.3 0.1 1.88 years
5. JUPITER 777.9 317.8 11.86
years
6. SATURN 1,427.1 95.2 29.63
years
7. URANUS 2,872.3 14.5 83.97

13. PROFILE OF THE
PLANETS(PART 2)
S PLANET PERIOD DIAMETE MEAN
NO. NAME OF R SURFACE
ROTATION (KM) TEMPERATUR
(IN DAYS) E
(° C)
1. MERCURY 58.67 4,878 167
2. VENUS 243.00 12,104 457
3. EARTH 0.99 12,756 15-20
4. MARS 1.02 6,794 -90- -5
5. JUPITER 0.41 142,800 -108
6. SATURN 0.42 120,000 -139
7. URANUS 0.45 52,000 -197
8. NEPTUNE 0.67 48,400 -200

14. PROFILE OF THE
PLANETS(PART 3)
S NO. PLANET NAME NUMBER OF
KNOWN
SATELLITES
1. MERCURY 0
2. VENUS 0
3. EARTH 1
4. MARS 2
5. JUPITER 16
6. SATURN 17
7. URANUS 15
8. NEPTUNE 8