The central stellar embryo may still "feed" off the material collapsing around it and continue to grow. Chunks of surviving matter not consumed by the voracious stellar embryo collide, combine, and later form planets through accretion. The explosive activity can also generate "solar winds" that may affect the weather on Earth. Not so for the Moon, where for millions of years asteroids pounded the surface, creating its peaks and valleys.
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. This indicates that one or more supernovae occurred near the Sun while it was forming. A shock wave from a supernova may have triggered the formation of the Sun by creating relatively dense regions within the cloud, causing these regions to collapse.
This cluster began to break apart between million and million years after formation. As the material within the nebula condensed, the atoms within it began to collide with increasing frequency, converting their kinetic energy into heat. The centre, where most of the mass collected, became increasingly hotter than the surrounding disc.
Main-sequence stars derive energy from the fusion of hydrogen into helium in their cores. The Sun remains a main-sequence star today. These rocky bodies would become the terrestrial planets MercuryVenusEarthand Mars.
These compounds are quite rare in the Universe, comprising only 0. The gas was partially supported by pressure and so did not orbit the Sun as rapidly as the planets. The resulting drag and, more importantly, gravitational interactions with the surrounding material caused a transfer of angular momentumand as a result the planets gradually migrated to new orbits.
Models show that density and temperature variations in the disk governed this rate of migration,   but the net trend was for the inner planets to migrate inward as the disk dissipated, leaving the planets in their current orbits. The ices that formed the Jovian planets were more abundant than the metals and silicates that formed the terrestrial planets, allowing the giant planets to grow massive enough to capture hydrogen and helium, the lightest and most abundant elements.
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.
Ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a "Solar System", simply because it was not generally thought that the Solar System, in . Join John Green and Crash Course Big History as they say goodbye to Pluto to see the formation of the eight planets and Sun in our Solar System. The Rock We Call Home What Did the Young Earth Look Like. Oct 14, · History & Origin Of Solar System The formation of Solar System is primarily believed to be based on the nebular hypothesis. As per the hypothesis, the .
Uranus and Neptune are thought to have formed after Jupiter and Saturn did, when the strong solar wind had blown away much of the disc material. Uranus and Neptune are sometimes referred to as failed cores.
At the current locations it would have taken millions of years for their cores to accrete. From that a minimum mass of the nebula i. It was derived that the nebula mass must have exceeded times that of the Earth. However, this has been questioned during the last 20 years.
Currently, many planetary scientists think that the Solar System might have looked very different after its initial formation: As they did so, the increased gravity of the wake slowed the larger objects down into more regular orbits. 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.
Nice model and Grand tack hypothesis According to the nebular hypothesis, the outer two planets may be in the "wrong place". 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.
At their distance from the Sun, accretion was too slow to allow planets to form before the solar nebula dispersed, and thus the initial disc lacked enough mass density to consolidate into a planet.
Saturn orbited the Sun once for every two Jupiter orbits. This caused Jupiter to move slightly inward. After Saturn formed, migrated inward, and established the 2: Jupiter thus would have consumed much of the material that would have created a bigger Mars. The same simulations also reproduce the characteristics of the modern asteroid belt, with dry asteroids and water-rich objects similar to comets.The History of Geology.
Class Powerpoints. STUDY. PLAY. (origin stories often include AGE + SHAPE of Earth, origin of geologic features Retrograde Motion was (better explained) if traditional ASSUMPTION about the structure of solar system was disregarded-use OBSERVATIONS to determine solar system structure.
The formation and evolution of the Solar System began billion years ago with the gravitational collapse of a small part Ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a "Solar System", simply.
Ideas concerning the origin and fate of the world date from the earliest known writings; however, for almost all of that time, there was no attempt to link such theories to the existence of a "Solar System", simply because it was not generally thought that the Solar System, in .
The Origin of the Solar System by Frank Crary, CU Boulder Here is a brief outline of the current theory of the events in the early history of the solar system.
History of Solar System formation and evolution hypotheses. Jump to navigation Jump to search Pierre-Simon Laplace, one of the French philosopher and mathematician René Descartes was the first to propose a model for the origin of the Solar System in his Le Monde.
Solar technology isn’t new. Its history spans from the 7th This solar system has been continuously operating since that time and the Bridgers-Paxton Building, is now in the National Historic Register as the world’s first solar heated office The History of Solar.