solar system & constellation(g 4)

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  • 1. Solar System & Constellation

2. Overview

  • Solar system refers to the sun (our star) and all objects that travel around its.
  • Components of the solar system divided into planets, satellites, asteroids, and comets.
  • Planets in Solar System are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.
  • Planets in Solar System named after figures from Greek and Roman mythology.

3. Nine planets can classified or grouped different ways:

  • By size :
  • Small planet Mercury, Venus, Earth, Mars and Pluto.
  • Giant planet Jupiter, Saturn, Uranus and Neptune.
  • By position from Sun :
  • Inner planet Mercury, Venus, Earth and Mars.
  • Outer planet Jupiter, Saturn, Uranus, Neptune and
  • Pluto.
  • By composition :
  • Terrestrial or rocky planet Mercury, Venus, Earth and
  • Mars.
  • Gas planet Jupiter, Saturn, Uranus and Neptune.

4. Sun

  • A gigantic ball of very hot gases.
  • Converts 6 million tons of hydrogen into helium every second.

5. Sun

  • Diameter : 1.4 million km (870,000 miles),which is 109 Earth diameters
  • Mass : 330,000 times the mass of the Earth
  • Time to rotate (at equator) : 25 Earth days
  • Temperature in central core : 14 million
  • Distance from center of our galaxy : 26,000 light years
  • Age : 4.5 billion years

6. Mercury at the edge of the Sun

  • A dense, rocky planet with a core made of iron and nickel.
  • The planet closet to the Sun.
  • Size bigger than Pluto, about the size of Earth.
  • Surface is scarred by ancient craters.
  • Temperatures soar to 370 day and night -185.
  • Orbit around the Sun, travels 50km/s(30 mile/s) faster than other planet.

7. Mercury

  • Average distance from the Sun: 58 million km
  • Diameter: 4880 km(3032 miles)
  • Mass: 0.06 times the Earths mass
  • Time to orbit the Sun: 88 Earth days
  • Rotation time (a day): 59 Earth days
  • Number of Moons: None

8. 9. Venus cloud-covered inferno

  • Called Earths sister planet.
  • Hottest world in the Solar system.
  • Second planet from the Sun.
  • The size and masses same as the Earth.
  • Temperature on surface 480(896)
  • Venus shrouded under a thick blanket of clouds, containing carbon dioxide and sulfuric acid.

10. Venus

  • Average distance from the Sun: 108 million km (67 million miles)
  • Diameter: 12,102 km (7520 miles)
  • Mass: 0.82 times the Earths mass
  • Time to orbit the Sun: 225 Earth days
  • Rotation time (a day):243 Earth Days
  • Number of Moon: None

11. 12. Earth the oasis

  • The only planet that can support human.
  • The only planet has oceans of liquid water, plenty of oxygen in its atmosphere.
  • Third planet from the Sun.
  • Pretty planet with swirling white clouds, blue oceans and mostly brown continents.
  • Earths core mostly made up of nickel and iron.

13. Earth

  • Average distance from the Sun: 150 million km (93 million miles)
  • Diameter: 12,756 km (7926 miles)
  • Mass: 6 x 10 24 kilograms
  • Time to orbit the Sun: 365 Earth days
  • Rotation time (a day): 23 hours 56 minutes 4 second
  • Number of Moon: One

14. 15. Moon our traveling companion

  • Has no atmosphere and no oceans of water.
  • Surface of Moon is pitted by numerous craters produced by series of impact about 4 billion years ago.
  • Surface was strewn with loose rocks, ranging in the size from pebbles to boulders as big as houses.

16. Moon

  • Average distance from the Sun: 384,400 km (238,855 miles)
  • Diameter: 3475 km (2160 miles)
  • Mass: Almost 1/100 thof the mass of the Earth
  • Rotation time (a day): 27 Earth days, 7 hours and 45 minutes, with respect to the stars

17. Mars the red world

  • The red planet.
  • A small rocky planet.
  • Fourth planet from the Sun.
  • Has inspired numerous science fiction tales as a source of hostile alien beings and underground colonies.
  • Smaller and colder than the Earth.
  • Rock looks red because iron in its surface soil has combined with oxygen to make rust.
  • Has two tiny moon called Phobos and Deimos.
  • Temperatures as low as -140(-220)

18. Mars

  • Average distance from the Sun: 228 million km (142 million miles)
  • Diameter: 6794 km (4221 miles )
  • Mass: 0.11 times the Earths mass
  • Time to orbit the Sun: 687 Earth days (or 1.88 years)
  • Rotation time (a day): 24 Earth hours and 43 minutes
  • Number of Moon: two

19. 20. Jupiter king of planet

  • The largest planet in the Solar system.
  • Fifth planet from the Sun.
  • Is a gas planet and does not have a solid surface like the Earth.
  • Atmosphere bristles with lightning and huge storm systems.
  • Top layers of Jupiter form swirling patterns of cloud, with bands of different color.
  • Temperatures change rapidly., from much hotter to much colder than any other places on Earth.

21. Jupiter

  • Average distance from the Sun: 778 million km (483 million miles)
  • Diameter: 142,984 km (88,846 miles)
  • Mass: 317 times the Earths mass
  • Time to orbit the Sun: 11.9 Earth yaers
  • Rotation time (a day): 9 Earth hours and 51 minutes
  • Number of Moon: at least 28

22. 23. Saturn jewel of the Solar System

  • Sixth planet from the Sun.
  • Famous for its dazzling and complicated rings.
  • Saturns ring span about 270,000 km(168,000 miles) from edge to edge.
  • The rings are very thin, only a few tens of meters thick.
  • Saturn composed of hydrogen and helium.
  • No solid surface.
  • Has more moon than others planet.

24. Saturn

  • Average distance from the Sun: 1430 million km (889 million miles)
  • Diameter: 120,536 km (74,898 miles)
  • Mass: 95 times the Earths mass
  • Time to orbit the Sun: 29.5 Earth years
  • Rotation time (a day): 10 Earth hours and 48 minutes
  • Number of Moon: at least 30

25. 26. Uranus rolling on its side

  • A giant gas planet.
  • Seventh planet from the Sun.
  • Has cloudy atmosphere made up of hydrogen and helium.
  • Spins on its axis in the opposite direction (known as retrograde) to most of the other planet.
  • The atmosphere has streaking bands and dark spot.
  • Circled by very thin rings which composed of centimeter-sized particles.

27. Uranus

  • Average distance from the Sun: 2877 million km (1788 million miles)
  • Diameter: 51,118 km (31,763 miles)
  • Mass: 14.5 times the Earths mass
  • Time to orbit the Sun: 84 Earth years
  • Rotation time (a day): 17 Erath hours and 17 minutes
  • Number of Moon: at least 21

28. 29. Neptune blue world of the deep

  • The fourth and last giant gas planet.
  • Eighth planet from the Sun.
  • Atmosphere made up of hydrogen.
  • Streaks of white cloud, ranging in width from 50-200km (30-120 miles) cross the atmosphere.

30. Neptune

  • Average distance from the Sun: 4498 million km (2795 million miles)
  • Diameter: 49,528 km (30,775 miles)
  • Mass: 16.7 times the Earths mass
  • Time to orbit the Sun: 165 Earth years
  • Rotation time (a day): 16 Earth hours and 5 minutes
  • Number of Moon: at least eight

31. 32. Pluto baby of the family

  • Smallest planet in Solar System.
  • Is icy and rocky, with frozen surface layers of methane.
  • Smaller than Earths Moon.
  • Temperature at the surface is about -220(-365)
  • Orbit around the Sun is highly elongated (or elliptical) and more tilted than other planet.

33. Pluto

  • Average distance from the Sun: 5919 million km (3675 million miles)
  • Diameter: 2274 km (1413 miles)
  • Mass: 0.002 times the Earths mass
  • Time to orbit the Sun: 249 Earth years
  • Rotation time (a day): 6 Earth days and 9 hours
  • Number of