Solar System Essay -- Science Astrology Planets Essays

Solar SystemHumans live on a small major planet in a tiny realm of a vast universe. This part of the universe is cryed the solar system, and is dominated by a single brilliant star-the sun. The solar system is the earths neighbourhood and the planets Mercury, Venus, Mars, Jupiter, Saturn, Uranus, Neptune and infernal region are the Earths neighbours. They all defend the same stars in the sky and orbit the same sun. Scientists believe the solar system began ab show up 5 billion years ago, perhaps when a nearby star exploded and caused a large foul of circulate and gas to collapse in on itself. The hot, central part of the cloud became the sun, while some smaller pieces formed around it and became the planets. Other fragments became asteroids and comets, which as well orbit the sun. The early solar system was a turbulent variety of hot gas and rocky debris.In the solar system e trulything is affected by the suns gravity. The planets and a variety of other objects, including comets, instigate the way they do because of the suns gravitational attraction. Our planet, Earth, is the third out from the sun. The planets are all different. Their differences are largely the result of their different distances from the sun.We call the planets that are closer to the sun, including the Earth, the inner planets. They are small rocky worlds. The out planets are much larger and are made from much sparkle materials. All but two planets, Mercury and Venus, have daydreams in orbit around them.The moonshineThe explorers found a dead world. There is no air and no water. Without an atmosphere, the sky is black at midday and the temperatures dangle by hundreds of degrees from day to night. No rivers or oceans have eroded the control surface no volcanoes are rebuilding the boring landscape.The surface has survived unchanged for billions of years. flat plains and lava flows that froze on the dream long before life arose on the Earth. Elsewhere, the Moon still bears the scars of e precise rock that has hit it from space, both large and small. The footprints of the visit astronauts will survive for millions of years.Crash and splashAstronomers now believe the Moon is the remains of a giant cosmic traffic accident. In its very early days, the Earth was hit by a runaway planet the size of Mars. White-hot molten rock were splashed into space, and solidified into a ring of rocks around the Earth. These th... ...ut beyond Neptune. Then the surprises began to appear.First, Pluto follows a very elongated path rather than a neat circle around the Sun. Its orbit crosses over Neptunes more circular route, so that sometimes Pluto is actually closer to the Sun than Neptune is. Its orbit it also tilt up more than any other planet. Double planetWith infract telescopes, astronomers found that Pluto is far smaller than any other planet-only half(a) the size of Mercury is. And its not alone. In 1978, a moon was discovered orbiting very close to Pluto itself on ly a puissant telescope can show them apart. This moon, Charon, is half Plutos avouch size, so that the two look more like a persona planet and its moon.Charon lies so close to Pluto that it looms large in the sky. Pluto and Charon always turn the same face to each other as they orbit from one side of Pluto Charon is always visible, while an speculative inhabitant on the other side would never see Charon at all.In the 1990s, astronomers started finding many smaller worlds orbiting the Sun in this region, rather like the asteroid belt further in. Because they are made in the main of frozen water and gases, they are called ice dwarfs.