Earth The earth is not only the place where humans live, it is also the center of our solar system. And although we may go to space and land on Mars, we would still call ourselves earthlings. Here on planet Earth, there are so many things that happen, and people just take them for granted. Things that make us proud are; the air we breathe, the food we eat, the water we drink, and how we have been able to create a society that doesn’t kill each other. However, it’s true that we’ve created some problems along the way. We’ve polluted our environment, we’ve put animals in cages because they were fun to watch, and we’ve even killed off species of animals. But what if I told you there was a way to solve these problems? What if I told you that you could help save our planet? Well, you would probably think that I’m crazy right? Because everybody wants to keep this planet earth for themselves. There are wars between countries about the land, and we’re destroying our own home. So let me ask you this, Is it worth keeping this world earth for yourself? If you answered yes, then your answer is selfish. There’s no point in living here if you don’t want others to live here. You shouldn’t try to conquer other countries, and get all their natural resources for yourself. That’s just wrong. And this isn’t just my opinion, it’s the opinion of millions of people around the world. So maybe you should look at this differently. Maybe you should realize that this world earth is something beautiful, special, and valuable. It’s the perfect place for us to live in. Why won’t you change your mind? Jupiter Jupiter is the largest gas giant in our Solar System and is orbited by four moons named Ganymede, Io, Callisto, and Europa. It has the second-largest density of any celestial object in the solar system and contains almost 90% of the mass of the planets. Since its discovery in 1610, astronomers have learned that Jupiter is composed primarily of hydrogen and helium, with smaller amounts of carbon monoxide, methane, ammonia, silicate, sulphur compounds, and various noble gases. Jupiters atmosphere comprises 99.8 percent of the total volume of the planet, while its interior features a core of metallic hydrogen surrounded by a rocky mantle and liquid metallic core. Its radiation belts extend outwards from Jupiter at altitudes of 50–500 km, making it one of the few planetary bodies known to possess a magnetosphere. Saturn Saturn is the sixth planet from the Sun, orbiting it every 10 years, and the fifth-largest in size after Uranus, Neptune, Pluto, and Ceres (the largest asteroid). At 1.52 × 109 kilograms, Saturn is less massive than both Jupiter and Uranus. As the least dense planet, Saturn is composed mainly of hydrogen and helium, along with trace amounts of methane, ammonia, and phosphine. Like Jupiter, Saturn has rings of numerous icy satellites including Titan, Rhea, Dione, Miranda, Ariel, Tethys, Enceladus, Mimas, and Hyperion. These rings are believed to consist of particles left over from the early formation of the Solar System 4.5 billion years ago, though whether they formed before or after the moon-forming event remains unresolved. The outermost ring is the F, which extends outward to beyond the orbit of Uranus. Uranus Uranus is the seventh planet from the Sun, and the fourth largest in terms of diameter. It takes 84 years to complete an orbit of the sun. It has 27 confirmed moons, the first of which discovered was Galatea in 1781. Uranus’ atmosphere consists of 87.9% molecular nitrogen, 9.0% molecular oxygen, 0.72% argon, and 0.11% xenon. In 1986, NASA launched Voyager 2, which became the first spacecraft to visit Uranus. On 14 January 2007, NASA announced that it had determined that the planet Uranus does not rotate on its axis. This discovery was based on data collected by Voyager 2 during its flyby of Uranus in August 1989. The rotation rate of Uranus is the slowest of the eight major planets of the Solar System, taking approximately 84 Earth years to complete one revolution. Neptune Neptune is the eighth planet from the Sun, the farthest of the five classical planets from the Sun and the third-densest, having a mean radius of 3065 kilometers. Named after the Roman god of the sea, Neptune is the smallest of the giant planets—only half as large again as Jupiter. A typical day on Neptune lasts nearly 12 hours, compared with nearly 11 hours on Jupiter. Like the other inner giant planets, it rotates counterclockwise on its axis due to tidal forces exerted by the Sun. Neptune is mostly composed of ice and rock, with traces of methane, ammonia, hydrogen sulfide, and helium. Its ten known moons are the tenth satellite of Neptune. Of these, two (Triton and Nereid) have irregular orbits, and seven (Naiad, Thalassa, Despina, Kerberos, Styx, Kalypso, and Proteus) are regular. The remaining three (Lunar Orbiter 3, Galatea, and Larissa) are small and dark, and likely captured asteroids. Pluto Pluto is the ninth planet from the Sun and the second-smallest of the eight major Planets. It is further known as the New Horizons Planet, after the mission that carried the probe to Pluto. Pluto is sometimes classified as a dwarf planet because it is sufficiently far away from the Sun that its gravity cannot melt the surface layers of ices covering its larger moons. Uranus Ufology, the study of UFOs, or Unidentified Flying Objects, started when contactee Frank Scully reported seeing unidentified flying objects (UFOs) in 1930. The term “flying saucer” came later in reference to these sightings. Most modern ufologists believe that most of the UFO reports filed with government agencies are hoaxes perpetrated by pranksters, although genuine cases continue to emerge annually. The phenomenon is often cited as evidence for extraterrestrial visitation of Earth.