Solar system
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Transcript of Solar system
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Our Solar System
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Do You Know What a Solar System is ?
Our solar system is made up of an
enormous sun and everything that travels
around it.
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---Our Solar System---
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If we were to put the planets in order , from the one
closest to the sun, they would be Mercury, Venus, Earth,
Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
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Instead of these planets, there are thousands of other
astronomical objects like ASTEROIDS, COMETS, GALAXIES,
NEBULAS, STARS, …….etc.
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Asteroids are sometimes called Minor Planets because they are made up of rocks
and metal.
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---The Crab Nebula---
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---The Iris Nebula---
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---Andromida Galaxy---
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---The Milkyway---
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P L A N E T S
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Definition of a Planet
A planet is an object in orbit around a star but does not give off its own light, rather it shines by reflecting sunlight.
…..There are 9 major planets…..
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MERCURY
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Mercury i s t h e i n n e r m o s t a n d s m a l l e s t p l a n e t i n t h e S o l a r S y s t e m , o r b i ti n g t h e S u n o n c e e v e r y 8 7 . 9 6 9 E a r t h d a y s . T h e o r b i t o f M e r c u r y h a s t h e h i g h e s t e c c e n t r i c i t y o f a l l t h e S o l a r S y s t e m p l a n e t s , a n d i t h a s t h e s m a l l e s t a x i a l ti l t . M e r c u r y i s b r i g h t w h e n v i e w e d f r o m E a r t h , r a n g i n g f r o m − 2 . 3 t o 5 . 7 i n a p p a r e n t m a g n i t u d e .
Physical Characteristics
Mean radius 2,439.7 ± 1.0 km0.3829 Earths
Flattening 0
Surface area 7.48 × 107 km²0.147 Earths
Volume 6.083 × 1010 km³0.056 Earths
Mass 3.3022 × 1023 kg0.055 Earths
Mean density 5.427 g/cm³
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AtmosphereSurface pressure trace
Composition
42% Molecular oxygen29.0% sodium22.0% hydrogen6.0% helium0.5% potassiumTrace amounts of argon, nitrogen, carbon dioxide, water vapor, xenon, krypton and neon
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VENUS
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Venus i s t h e s e c o n d p l a n e t f r o m t h e S u n , o r b i ti n g i t e v e r y 2 2 4 . 7 Ea r t h d ay s . T h e p l a n e t i s n a m e d a ft e r Ve n u s , t h e Ro m a n g o d d e s s o f l o v e a n d b e a u t y. A ft e r t h e M o o n , i t i s t h e b r i g ht e s t n a t u ra l o b j e c t i n t h e n i g ht s k y, r e a c h i n g a n a p p a r e nt m a g n i t u d e o f − 4 . 6 , b r i g h t e n o u g h to c a s t s h a d o w s .
--The surface of Venus--
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E A R T H
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Physical CharacteristicsMean radius 6,371.0 kmEquatorial radius 6,378.1 kmPolar radius 6,356.8 kmFlattening 0.0033528
Circumference 40,075.16 km (equatorial)40,008.00 km (meridional)
Surface area
510,072,000 km2 148,940,000 km2 land (29.2 %)
361,132,000 km2 water (70.8 %)
Volume 1.08321 × 1012 km3
Mass 5.9736 × 1024 kgMean density 5.515 g/cm3
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AtmosphereSurface pressure 101.325 kPa (MSL)
Composition
78.08% nitrogen (N2)20.95% oxygen (O2)0.93% argon0.038% carbon dioxideAbout 1% water vapor (varies with climate)
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View of the Earth from the Moon
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Dawning of Night
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M ARS
The Red Planet
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Physical CharacteristicsEquatorial radius 3,396.2 ± 0.1 km
0.533 Earths
Polar radius 3,376.2 ± 0.1 km0.531 Earths
Flattening 0.005 89 ± 0.000 15
Surface area 144,798,500 km2
0.284 Earths
Volume 1.6318 × 1011 km3
0.151 Earths
Mass 6.4185 × 1023 kg0.107 Earths
Mean density 3.9335 ± 0.0004 g/cm³
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The FACE on Mars
THE SURFACE OF MARS
Size comparison of Earth & Mars
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J U P I T E R
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Physical Characteristics
Equatorial radius 71,492 ± 4 km11.209 Earths
Polar radius 66,854 ± 10 km10.517 Earths
Flattening 0.06487 ± 0.00015
Surface area 6.21796×1010 km²[
121.9 Earths
Volume 1.43128×1015 km³[
1321.3 Earths
Mass1.8986×1027 kg317.8 Earths1/1047 Sun
Mean density 1.326 g/cm³[
Equatorial surface gravity 24.79 m/s²2.528 g
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Size comparison of Earth & Jupiter
The Great Red Spot
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S A T U R N
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Physical Characteristics
Equatorial radius 60,268 ± 4 km9.4492 Earths
Polar radius 54,364 ± 10 km8.5521 Earths
Flattening 0.097 96 ± 0.000 18
Surface area 4.27 × 1010 km²83.703 Earths
Volume 8.2713 × 1014 km³763.59 Earths
Mass 5.6846 × 1026 kg95.152 Earths
Mean density 0.687 g/cm³(less than water)
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THE RINGS OF SATURN
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U R A N U S
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Physical Characteristics
Equatorial radius 25,559 ± 4 km4.007 Earths
Polar radius 24,973 ± 20 km3.929 Earths
Flattening 0.022 9 ± 0.000 8
Circumference 156,909.98 km
Surface area 8.115 6 × 109 km²15.91 Earths
Volume 6.833 × 1013 km³63.086 Earths
Mass
(8.6810 ± 0.0013) × 1025 kg14.536 EarthsGM=5 793 939 ± 13 km³/s²
Mean density 1.27 g/cm³
AtmosphereScale height 27.7 kmComposition (Below 1.3 bar) 83 ± 3% Hydrogen (H2)
15 ± 3% Helium2.3% Methane
0.009%(0.007–0.015%)
Hydrogen deuteride (HD)
Ices:Ammoniawaterammonium hydrosulfide (NH4SH)
methane (CH4)
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NEPTUNE
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Physical CharacteristicsEquatorial radius 24,764 ± 15 km
3.883 Earths
Polar radius 24,341 ± 30 km3.829 Earths
Flattening 0.0171 ± 0.0013
Surface area 7.6408 × 109 km²14.98 Earths
Volume 6.254 × 1013 km³57.74 Earths
Mass 1.0243×1026 kg17.147 Earths
Mean density 1.638 g/cm³
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P L U T O
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M O O N
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A Comet
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Created and Edited by
Malith Niluka
201441
LONDONTEC CITY CAMPUS
THE END