How Does Planetary System Work?

Accordingly, the solar system has any orbit; the real question is, how did gravity impact the motion of the planets? They couldn’t have just began to rotate by themselves. In the first place, the planets orbit around a source, which is the sun having lots of gravitational pull to allow the eight planets to orbit around. Gravity, is what causes the planets to only go a certain speed and time to go around the sun. Without gravity we wouldn’t stay revolving around. (Gravity and Orbit Simulation,1/20/2017) Likewise, the revolution of the planets going around the sun isn’t a circle, it’s more of an oval shape. Likewise, the velocity of a planet's revolution also ties into this because, the planet’s have an elliptical orbit meaning they change in

the planets fall around the Sun. Each of these objects balances the Sun 's force of gravity

Made up of all the planets that orbit the sun, the Solar System has over 100 worlds. In addition to eight planets without Pluto and nine with Pluto, the Solar System also consist of gas, dust, minor planets,asteroids, and moons. Containing 98% of all the materials in the Solar System, the sun is an extremely important object in the Solar System. Everything in the Solar System orbits or revolves around the sun. The larger an object is in space the more gravity it has and that why the enormous sun contains 98% of all the materials in the Solar System. The Solar System basically is just the planets moving rapidly and trying to fly away from the sun. They end up in in the emptiness of outer space. The outcome of the planets trying to fly away and

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

Barucci, M. A., Boehnhardt, H., Cruikshank, D. P., Morbidelli, A. and Renee Dotson: 2008, The Solar System Beyond Neptune, University of Arizona Press.

In the past the definition of a planet in space was a body that orbits a star, such as the sun, that reflects the star’s light and is larger than an asteroid. This is until new research by new technologies allowed us to learn more and change the definition of a planet. This new information changed the fact that Pluto is no longer a planet, but a dwarf. Dwarfs may confuse many people because it is hard to tell it apart from a planet.

There a many hypotheses explaining how the solar system formed. In science class, we learned about three hypotheses explaining the formation of the solar system. We learned about the nebular, protoplanet, and planetisemal hypotheses.

The Moon and Earth have a very unique role in the solar system. Earth is really the only terrestrial planet with a large moon compared to the other planets that are closest to the Sun.

As a child in school I learnt that there were nine planets and nothing about any other planets or solar systems. Now, as an adult we are told there are only eight planets in our solar systems, but there are more planets out there in different solar system, the universal is much bigger than we could ever possibly thought it was. These planets are refers to as exoplanets and thousands of planets have been discovered over the last couple decades. Many people have question is their life out there beside us on Earth and if so how can it be if the Earth is the only planet in our solar system have life? How are we able to find these other planets? What are these exoplanet like? These are just some of the questions astronomers have

gravitational pull and all of the asteroids in it revolve around the Sun. Although the majority of

What is a planet? Well scientists have argued a lot about what a planet really is and in 2006 they finally came up with a definition. They said a planet must do these three things: it has to orbit around the sun, must be big enough to have gravity to force it into a spherical shape, and must be big enough that its gravity cleared away any other objects of a similar size near its orbit around the sun. This definition only goes only for the planets in our solar system. There are planets outside our solar system and their called exoplanets, and they usually orbit a star outside the solar system. Scientist say that Pluto is not a planet but a dwarf planet. But in my opinion Pluto is a planet because a planet should be a planet no matter

Mars has two moons. Their names are Phobos and Deimos. They are made of carbon-rich rock mixed with ice and are covered in dust and loose rocks. They have creators all over from meteorites hitting them. They are much smaller than Earth’s moon and are shaped irregularly since they don't have enough gravity to pull themselves into a more circular shape.

First, however, scientists must observe the exoplanets and photograph them. Researchers utilize space-based telescopes to survey regions of deep space and capture photographs of those regions. Once a space-based photometer has multiple photographs of an exoplanet, scientists use the spectroscopy data to determine the mass, size, orbital period and eccentricity of the orbit, radius, and density of the exoplanet. Next, scientists use this data to better comprehend the process of planetary evolution. In addition, these statistics allow scientists to discover Earth-sized exoplanets and detect biosignatures that indicate the presence of life. Matt Mountain from the Space Telescope Science Institute in Baltimore says, “Just imagine the moment, when we find potential signatures of life. Imagine the moment when the world wakes up and the human race realizes that its long loneliness in time and space may be over -- the possibility we're no longer alone in the universe.” (“Finding Life Beyond Earth is Within Reach”). Should we discover life on exoplanets, our views of outer space will change greatly, and we will enter a new era of space study. The discovery of extraterrestrial life will also influence our philosophy about the world. Additionally, it is known that the material around stars combine to form planets. Space-based telescopes study this material in order to give scientists better knowledge of how these materials combine to form planets. Thus, the examination of exoplanets provides data useful for studying planetary system evolution, including how planetary orbits form and whether planets form outside of the solar system and then move inward or form inside the solar system. The study of exoplanets can also help scientists comprehend why rocky planets such as Earth are closer to the

"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 terrestrial planets are Mercury, Venus, Earth, and Mars. These four planets are the planets that are closest to the sun. Terrestrial means earthlike; therefore, these planets are all earthlike because they have a solid ground. The terrestrial planets are the middle school years. The knowledge learned here orbits the sun. If the knowledge learned at the sun is not retained, a student may have a