The Planets Of The Solar System

The solar system was created 4.6 billion years ago by a gravitational collapse. A solar system is a star that has planets, moons, asteroids, comets, and meteoroids travel around it. The solar system contains eight known planets which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, and Neptune. There is around several hundred dwarf plants but only five are currently recognized. The solar system has about 181 moons which orbit around the planets in the solar system. There is also about 150 million asteroids and 3,406 comets also in the solar system.

Neptune is the eighth and farthest planet from the Sun in the Solar System. It is the fourth-largest planet by diameter and the third-largest by mass. Neptune is 17 times the mass of Earth and is somewhat more massive than its near-twin Uranus, which is 15 times the mass of Earth but not as dense.[12] On average, Neptune orbits the Sun at a distance of 30.1 AU, approximately 30 times the Earth–Sun distance. Named for the Roman god of the sea, its astronomical symbol is ♆, a stylised version of the god Neptune's trident.

In inspiring people to have the passion in understanding the universal laws that govern us all, Professor Stephen Hawking reminds us on his speech for his 70th birthday to “remember to look up at the stars and not down at your feet” (enoch, 2012). Many scientists have been “looking up” and have discovered answers to the many questions that we have of the universe for ages. They have constructed theories, launched satellites, observed stellar phenomena, and even sent living beings in space to gain more understanding of the existence of everything. After centuries of research and observation, there are still some aspects of Astronomy that are still to be explored. One of them is the evolution of the Solar System, which is composed of the Sun and everything that travels around it. This includes eight planets and their natural satellites such as the Earth’s moon; dwarf planets such as Pluto and Ceres; asteroids; comets and meteoroids (Solar System Exploration, 2014). The Solar System is located in the Milky Way Galaxy, which is a part of a galactic group under the Virgo Supercluster. Figure 1 shows the location of our Solar System in the Universe. Many theories have been proposed on how the Solar System existed, but none has been completely successful. This spans from the time of the Ancient Greeks to the present 21st Century. As of now, the widely accepted theory is the Nebular Theory, which describes how the Solar System started as a large cloud of gas that contracted under

Not only are Pluto and the other eight planets similar, they are also different in multiple ways. After all, Wilson A. Bentley once said: “No two snowflakes are alike.” As most, if not all, people know, planets have an orbit. However, Pluto’s orbit is a little different and unusual compared to the orbit of the other eight planets. Although Pluto takes longer than the other planets to one orbit around the sun (248 earth years), the main difference is that Pluto’s orbit doesn’t lie in the same plane as the eight planets, but is inclined at an angle of 17 degrees. Not only that, but its orbit is more elliptical, or oval-shaped, than others. This causes Pluto to sometimes passes inside the orbit of Neptune. In paragraph 3, it mentioned that

Like men in other civilizations, ancient Greeks also looked into the night sky and saw those thousands of twinkling lights. They could see that most of the tiny lights are fixed relative to each other, but a few wonder (move) about. They called those wandering lights "Planets" (in Greek, planet means wanderer); the rest fixed tiny lights were called, “Stars”. With their naked eyes, they could see only five planets. The English names by which we now know these five planets; Mercury, Venus, Mars, Jupiter and Saturn, were derived from the names of mythological Roman Gods. In Roman mythology; Mercurius, son of Jupiter, is the patron god of financial gain and supposed to move fast. Planet mercury was named after him. The name was appropriate

Scientists have been researching about outer space for years but still don’t know as much as one may think. Scientists still do not know much about the early solar system. Scientists believed that the solar system was reshuffled around in the past which would explain the Kuiper belt and the Oort cloud of icy bodies, the inner planets being destroyed by asteroids and why there isn’t any super Earths around in this solar system. But scientists recently discovered something that may change their theory. In Michael D. Lemonick’s “Plant Nine from Outer Space,” Lemonick claims that scientists may have found a planet with ten times the mass of Earth that is beyond Pluto and may be the reason why objects from the Kuiper belt are following similar orbits

Our very own solar system consists of the most important star called the Sun, it provides earth with the necessary energy in order to sustain life. There are 8 planets revolving around the sun and they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus,Neptune , and Pluto. However Pluto is no longer considered a planet. But that is still debatable. The Sun is the center o the Solar System, it has a nearly perfect sphere shape of hot plasma that generates a magnetic field. The asteroid belt is a circumstellardisc which is located in the Solar system between the planet of Mars and Jupiter. The solar system is just one of the many galaxies in our universe and there are more galaxies yet to be discovered.

In our solar system, planets and dwarf planets have many similarities that had scientists bewildered about weather it was a planet or a dwarf planet.  But now, after years of studying these planets and now with superior technology, we have found the vital difference with our eight planets and five main dwarf planets.  The main difference is that our planets have a clear path around the sun, while dwarf planets, still orbit the sun, have debris and space junk in their paths.  Other differences still lie within the (dwarf) planets themselves.  Adding on, the five main dwarf planets in our solar system are very similar, but still have extra bits and pieces that make them unique.  These dwarf planets include Pluto, Makemake, Ceres, Eris, and Haumea.

The earth is so far the known planet to sustain life. Starting as small dense group, humans have populated the earth to where they the most populated species on earth. When humans first populated the earth, they did not live long lives. Disease, animals, and natural disasters made life on earth a nightmare. As humans

This semester in physical science I have realized numerous things, yet what I discovered to be the most fascinating was the point at which we discussed the earth 's planetary group. I discovered that the earth 's planetary group has numerous things in it, however as large as the earth 's planetary group is it just has one stay which is called Sol which is otherwise called the sun. The earth 's planetary group is 4.568billion years of age, and it comprises of eight planets. The IAU is right now perceiving five midget planets, however of the five there are perhaps a few hundred more to be named. At this point there are 431 common satellites, and of those 173 of them are planetary and 258 of them are named minor. There are 659,212 referred to lunar planets and 3296 comets as of September 25, 2014. Our earth 's planetary group just has nineteen round satellites in it starting now. In the event that I were to rundown the planets by separation from the sun, they would be: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The closest planetary framework is Alpha Centauri which is 4.37 light years away. As specified before the midget planets and they are: Cereces, Pluto, Humea, Makemake, and Eris. The orbital rate of our earth 's planetary group is as of now recorded as being 220km/s, and the orbital period is 220-250 MY. Our seeing about the universe and our spot in it has changed about whether. New data can make us reevaluate what we know and reconsider how we

Humans have longed to believe in extrasolar planets, as surely there have to be planets elsewhere in the universe. Claims of supposedly discovered extrasolar planets can be dated back to 1855 when Captain S. W. Jacobs from the Madras observatory, claimed that he had discovered a planet orbiting a binary system (Jacobs 1855), all the way up until 1991 when a team of astronomers announced then retracted the alleged discovery of an extrasolar planet around a pulsar star (Lyne and Bailes 1992). Planets are extremely hard to detect as they are a very faint light source and the light from its parent star is much brighter and essentially blocks out light from a planet (Winters 1996). It was not until 1992 when the first exoplanets were confirmed

"A planet is a celestial body that revolves around a central star and does not shine by its own light " (Grolier, 1992). The only planetary system that is known to man is our

The solar system consists of the Sun; the nine planets, 67 satellites of the planets and a large number of small bodies (comets and asteroids). The inner solar system contains the Sun, Mercury, Venus, Earth and Mars. The planets of the outer solar system are Jupiter, Saturn, Uranus and Neptune. The orbits of the planets are ellipses with the Sun at one focus.

The science community is getting very close to discovering earth-like planets and extraterrestrial life in outer space. This is considered a valued assumption among many researchers and astronomers. To date, they have actually discovered more than 800 of these exoplanets amongst the billions and billions of stars in our galaxy. The more planets found like HD40307g, the more they resemble earth with earth-like characteristics (the spinning on its axis, having a night and a day, and orbiting in the habitable zone). Astronomers are also finding them closer to our solar system. Another assumption of these findings are that humans are developing and advancing technology to communicate, navigate, and live in outer space in the near future. NASA said no candidate planet discovered thus far by Kepler "is exactly like Earth," but noted that the spacecraft "has collected enough data to begin finding true sun-Earth analogs—Earth-size planets with a one-year orbit around stars similar to the sun." (Poeter, 2012)

The planet Mercury is very difficult to study from the Earth because of its proximity to the Sun.