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An overview of the origin of the solar system

Assess correspondence between the predicted result contained in the hypothesis and actual result, and reach a conclusion as to whether the explanation on which the prediction was based is supported NY State Earth Science Reference Tables: The Moon would be about 30 cm about a foot from the Earth.

Mercury, Venus, Earth and Mars. Jupiter, Saturn, Uranus, Neptune. The planets are very small compared to the space between them. Our solar system formed about five billion years ago from a giant cloud of gas and debris.

Stars form when gravity causes clouds of molecules to contract until nuclear fusion of light elements into heavier ones occurs. With a few exceptions, the planetary satellites orbit in the same sense as the planets and approximately in the plane of the ecliptic but this is not generally true for comets and asteroids.

Most of them were created by combining several black and white images taken thru various color filters. The eight bodies officially categorized as planets are often further classified in several ways: Pre-solar nebula[ edit ] The nebular hypothesis says that the Solar System formed from the gravitational collapse of a fragment of a giant molecular cloud.

The Sun remains a main-sequence star today. Because the frost line accumulated large amounts of water via evaporation from infalling icy material, it created a region of lower pressure that increased the speed of orbiting dust particles and halted their motion toward the Sun. A human on this scale would be the size of an atom but the nearest star would be over km away. As they did so, the increased gravity of the wake slowed the larger objects down into more regular orbits. Jupiter, Saturn, Uranus, and Neptune: Gravity caused Earth and the other planets to become layered according to density differences in their materials.

This caused Jupiter to move slightly inward. One way to help visualize the relative sizes in the solar system is to imagine a model in which everything is reduced in size by a factor of a billion. The first thing to notice is that the solar system is mostly empty space. The classification of these objects is a matter of minor controversy. Asteroids, comets, and meteors are components of our solar system.

Not shown in the above illustrations are the numerous smaller bodies that inhabit the solar system: Fusion releases great amounts of energy over millions of years. Jupiter would be 15 cm in diameter the size of a large grapefruit and 5 blocks away from the Sun. Unfortunately, the solar system has been found to be more complicated than this would suggest: The giant planets are sometimes also referred to as gas giants.

The asteroid belt between Mars and Jupiter forms the boundary between the inner solar system and the outer solar system. The same simulations also reproduce the characteristics of the modern asteroid belt, with dry asteroids and water-rich objects similar to comets.

Mercury, Venus, Earth, and Mars: Then the model Earth would be about 1. In the pages that follow, I will use the conventional categorizations. The central purpose of scientific inquiry is to develop explanations of natural phenomena in a continuing and creative process SI 1. Main-sequence stars derive energy from the fusion of hydrogen into helium in their cores. Traditionally, the solar system has been divided into planets the big bodies orbiting the Suntheir satellites a. The asteroid belt initially contained more than enough matter to form 2—3 Earth-like planets, and, indeed, a large number of planetesimals formed there.

The above diagrams show correct positions for October as generated by the excellent planetarium program Starry Night ; there are also many other similar programs available, some free. Uranus and Neptune known as the " ice giants " exist in a region where the reduced density of the solar nebula and longer orbital times render their formation highly implausible.

The superior planets always appear full or nearly so.The lesson gives the overview of the course and discussion on the origin of universe and solar system. Sign up now to enroll in courses, follow best educators. Chapter 6 Our Solar System and Its Origin How was the Solar System Formed?

Resources for Leaders: New Visions Science Leadership Summit ; Describe current theories about the origin of the universe and solar system. ES a. Unit 1: Origin of the Universe and Our Solar System.

Unit Overview: Hunting for Earth Performance Task. The solar system consists of the Sun; the eight official planets, at least three "dwarf planets", more than satellites of the planets, a large number of small bodies (the comets and asteroids), and the interplanetary medium.

ORIGIN AND EVOLUTION OF THE SOLAR SYSTEM: An overview Julio A. Fern´andez Departamento de Astronom´ıa, Facultad de Ciencias, Montevideo, URUGUAY. The Origins course tracks the origin of all things – from the Big Bang to the origin of the Solar System and the Earth.

The course follows the evolution of life on our .
