2. Solar System

3.  Our solar system is home to a number of regions populated by smaller objects and is found in the milky way galaxy  Some of these objects include the sun, our eight planets and their moons, astronomical objects such as satellites, and our asteroid belt etc.

4.  The Milky Way is the galaxy that contains our solar system it comes from the Latin word “ milky road”.  The galaxy has this appearance because of the Earth's position within the galactic plane.

5.  The word planet comes from a Greek word meaning “Wandering Star”. Each planet orbits the sun and moons orbit the planets  To be correct our planets fall in the direct order of Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto

6. The orbit of Mercury has the highest eccentricity of all the planets Mercury has a very tenuous and highly variable atmosphere containing hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor Mercury's moon was detected moving away from Mercury, and was, eventually, identified as a star, 31Crateris. Its climate has important similarities, such as the polar ice caps, seasonal changes and the observable presence of weather patterns.

7. Venus is the second planet from the sun, orbiting it every 224.7 Earth days Venus has no moons The atmosphere of Venus is much denser and hotter than that of Earth and The temperature at the surface is 740 K

8.  Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets.  The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity  Earth has one moon Luna It is corvered with mountains, valleys, old volcano sites, and many bowl- like holes called craters.  Earth's internal heat comes from a combination of residual heat from planetary accretion (about 20%) and heat produced through radioactive decay (80%).

9. MMars has two moons, their names are Deimos and Phobos. Their small size causes their gravity to be very weak. Because of this weak gravity they do not have enough force to pull themselves into a round shape. MMars is the fourth planet from the Sun in the Solar System TThe atmosphere of mars is relatively thin and is composed mostly of carbon dioxide TThe daytime SURFACE temperature is about 80 F during rare summer days, to -200 F at the poles in winter. The AIR temperature, however, rarely gets much above 32 F.

10. JJupiter is the fifth planet from the Sun and the largest planet within the Solar System TThe atmosphere of Jupiter is the largest planetary atmosphere in the Solar System. It is mostly made of molecular hydrogen and helium AAt the same pressure as Earth's atmosphere, the temperature is -110°C (-166°F), however, the tops of the visible clouds are approximately -70°C AAt the same pressure as Earth's atmosphere, the temperature is -110°C (-166°F), however, the tops of the visible clouds are approximately -70°C JJupiter has at least 62 moons. Most of these moons are very small, and were probably once asteroids that got too close to Jupiter.

11.  Saturn is the sixth planet from the Sun and the second largest planet in the Solar System, after Jupiter  The outer atmosphere of Saturn consists of 96.3% molecular hydrogen and 3.25% helium.  The planet gives off about 2 ½ as much heat as it receives from the sun  Saturn has more moons than any other planet, 62 currently, and counting. Of these 62 moons, 53 are classified officially as moons, 9 are provisional (unofficial) moons.

12. LLike Jupiter and Saturn, Uranus is a gas giant. AAnd one unusual thing I learned was that Uranus spins on its side UUranus has 27 moons. Five of these moons are large and the rest are smaller. TThe Atmosphere of Uranus like those of the larger gas giants Jupiter and Saturn, is composed primarily of hydrogen and helium.

13. NNeptune is the eighth and farthest planet from the Sun in the Solar System. NNeptune has thirteen known moons, by far the largest of which is Triton AAt high altitudes, Neptune's atmosphere is 80% hydrogen and 19% helium.

14. PPluto was recategorized as a dwarf planet and plutoid due to the discovery that it is one of several large bodies within the newly charted Kuiper belt PPluto is not a planet. However, it does have a moon that orbit it Charon. PPluto's atmosphere consists of a thin envelope of nitrogen, methane, and carbon monoxide gases