what theory best explains the origin of the solar system

What came out of the evolutionary theory of the Solar System?

What came out of the evolutionary hypothesis was the solar nebula theory, the theory that posits that the planets and sun in the solar system formed from the solar nebula. The solar nebula is a cloud of interstellar gas and dust that condensed to form the entire solar system, including the sun and planets.

What are the theories of the origin of the Earth?

The existence of comets and asteroids. The only theory to date that meets all of the requirements stated above is known as the solar nebula theory. This suggests that the solar system arrived at its current form after collapsing from a molecular gas cloud some 4.568 billion years ago.

What is the theory of the origin of the universe?

Identifying a Theory. The only theory to date that meets all of the requirements stated above is known as the solar nebula theory. This suggests that the solar system arrived at its current form after collapsing from a molecular gas cloud some 4.568 billion years ago.

What is the second theory of the origin of the Sun?

Nebular Hypothesis: A second theory is called the nebular hypothesis. In this theory, the whole Solar System starts as a large cloud of gas that contracts under self-gravity. Conservation of angular momentumrequires that a rotating disk form with a large concentration at the center (the proto-Sun).

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How did the solar system form?from britannica.com

The nebular hypothesis says that the Solar System formed from the gravitational collapse of a fragment of a giant molecular cloud. The cloud was about 20 parsec (65 light years) across, while the fragments were roughly 1 parsec (three and a quarter light-years) across. The further collapse of the fragments led to the formation of dense cores 0.01–0.1 parsec (2,000–20,000 AU) in size. One of these collapsing fragments (known as the presolar nebula) formed what became the Solar System. The composition of this region with a mass just over that of the Sun ( M☉) was about the same as that of the Sun today, with hydrogen, along with helium and trace amounts of lithium produced by Big Bang nucleosynthesis, forming about 98% of its mass. The remaining 2% of the mass consisted of heavier elements that were created by nucleosynthesis in earlier generations of stars. Late in the life of these stars, they ejected heavier elements into the interstellar medium.

When was the solar system invented?from en.wikipedia.org

The first recorded use of the term "Solar System" dates from 1704. The current standard theory for Solar System formation, the nebular hypothesis, has fallen into and out of favour since its formulation by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace in the 18th century.

What is the result of Laplace's theory?from britannica.com

Laplace’s model led naturally to the observed result of planets revolving around the Sun in the same plane and in the same direction as the Sun rotates. Because the theory of Laplace incorporated Kant’s idea of planets coalescing from dispersed material, their two approaches are often combined in a single model called the Kant-Laplace nebular hypothesis. This model for solar system formation was widely accepted for about 100 years. During this period, the apparent regularity of motions in the solar system was contradicted by the discovery of asteroids with highly eccentric orbits and moons with retrograde orbits. Another problem with the nebular hypothesis was the fact that, whereas the Sun contains 99.9 percent of the mass of the solar system, the planets (principally the four giant outer planets) carry more than 99 percent of the system’s angular momentum. For the solar system to conform to this theory, either the Sun should be rotating more rapidly or the planets should be revolving around it more slowly.

What is the problem with the Nebular hypothesis?from britannica.com

Another problem with the nebular hypothesis was the fact that, whereas the Sun contains 99.9 percent of the mass of the solar system, ...

How did Laplace's model work?from britannica.com

Laplace’s model begins with the Sun already formed and rotating and its atmosphere extending beyond the distance at which the farthest planet would be created. Knowing nothing about the source of energy in stars, Laplace assumed that the Sun would start to cool as it radiated away its heat. In response to this cooling, as the pressure exerted by its gases declined, the Sun would contract. According to the law of conservation of angular momentum, the decrease in size would be accompanied by an increase in the Sun’s rotational velocity. Centrifugal acceleration would push the material in the atmosphere outward, while gravitational attraction would pull it toward the central mass; when these forces just balanced, a ring of material would be left behind in the plane of the Sun’s equator. This process would have continued through the formation of several concentric rings, each of which then would have coalesced to form a planet. Similarly, a planet’s moons would have originated from rings produced by the forming planets.

How hot is the surface of a protoplanetary disc?from en.wikipedia.org

These discs extend to several hundred AU —the Hubble Space Telescope has observed protoplanetary discs of up to 1000 AU in diameter in star-forming regions such as the Orion Nebula —and are rather cool, reaching a surface temperature of only about 1,000 K (730 °C; 1,340 °F) at their hottest.

What are the giant planets in our solar system called?from britannica.com

Giants of Our Solar System. Sometimes called the gas, ice, or giant planets, Jupiter, Saturn, Uranus, and Neptune also go by the name Jovian planets. Try this quiz to see just how much you know about these giants of our solar system.

What are the conditions that must be explained to explain the origins of our solar system?

The primary conditions that must be explained include: The placement of the Sun at the center of the solar system. The procession of the planets around the Sun in a counterclockwise direction ...

How did the solar system come to its current form?

This suggests that the solar system arrived at its current form after collapsing from a molecular gas cloud some 4.568 billion years ago. In essence, a large molecular gas cloud, several light-years in diameter, was disturbed by a nearby event: either a supernova explosion or a passing star creating a gravitational disturbance.

What are the planets that collided with the newborn star called?

In the region surrounding the newborn star, small, hot globs of material collided together to form larger and larger "worldlets" called planetesimals. Eventually, they became large enough and had enough "self-gravity" to assume spherical shapes. As they grew larger and larger, these planetesimals formed planets.

What is the balance of temperature and mass in the inner solar system?

The balance of temperature and mass in the inner solar system explains the arrangement of worlds that we see. The action of planet formation also affects how planets settle into their final orbits, and how worlds are built and then modified by ongoing collisions and bombardment.

What does it mean when we say the solar system is unique?

Some think that the structure of our solar system is the one that is unique, containing a much more rigid structure than others.

What are the pre-stars?

These pre-stars are characterized by surrounding gas clouds containing pre-planetary matter with most of the mass contained in the star itself. The rest of the matter out in the surrounding disk supplied the fundamental building blocks for the planets, asteroids, and comets that would eventually form.

How long did it take for the core of a star to fusion?

About 50 million years after the initial shock wave instigated the collapse, the core of the central star became hot enough to ignite nuclear fusion. The fusion supplied enough heat and pressure that it balanced out the mass and gravity of the outer layers.

What were the two competing theories as to what force was responsible for the creation of the solar system?

Back in the 20th century, the two competing theories as to what force was responsible for the creation of the solar system were the catastrophic hypothesis and the evolutionary hypothesis.

What is the theory that the Sun and the Sun form from the Sun?

Enough evidence was gathered in the 20th century to make the evolutionary hypothesis into a theory. The solar nebula theory is the theory that posits that the planets and sun in the solar system formed from the solar nebula.

What is the cloud that forms the solar system?

To sum everything up, an interstellar cloud of gas and dust rotated and flattened into a disk, with the sun forming in the center and the planets in orbits around the sun. Meaning, the solar system, sun and planets included, formed from the same solar nebula, a cloud of interstellar gas and dust that condensed to form the entire solar system, ...

What is the catastrophic hypothesis?

The catastrophic hypothesis is a hypothesis that states that our solar system formed thanks to a sudden and improbable event such as the collision of two stars. The evolutionary hypothesis is ...

What is the implication of the solar nebula theory?

The implication of the solar nebula theory is actually quite deep. This theory essentially says that planetary formation is a normal part of the formation of a star. Remember, the planets formed from the same stuff the star formed. That's the gist of it. As a result, we should come to expect that most stars in the universe should also have planets just like our own. This is, of course, great news for those hoping for life on other planets since it means planets around a star are a common, rather than rare, consequence of stellar formation.

What is the evolutionary hypothesis of the solar nebula?

What came out of the evolutionary hypothesis was the solar nebula theory, the theory that posits that the planets and sun in the solar system formed from the solar nebula. The solar nebula is a cloud of interstellar gas and dust that condensed to form the entire solar system, including the sun and planets.

What is the evolutionary hypothesis?

The evolutionary hypothesis is a hypothesis that states that gradual and natural changes caused the formation of our solar system. Although many astronomers and physicists tend to lean towards the catastrophic explanation for the extinction of the dinosaurs, they don't seem to do so for the explanation of the solar system. Odd bunch they are.

What formed the Moon?

Material torn from Earth's crust by a giant impact formed the Moon.

What are the two main types of planets?

a) There are two main types of planets: terrestrial and jovian.

Is a planetesimal a leftover?

They are leftover planetesimals, according to the nebular theory.

How many hypothesis about the origin of the Solar System?

Five major Five major theories about the formation of the Solar System.

What are the different hypothesis given about the origin of the earth?

Formation of the solar system quickly and violently: Old planetesimal hypotheses, Nebular hypotheses, new planetesimal hypotheses and tidal hypotheses are some examples of it. Formation of the solar system slowly and moderately: A dust cloud aggregation hypothesis is an example of it.

What are hypotheses?

A hypothesis is an assumption, an idea that is proposed for the sake of argument so that it can be tested to see if it might be true. In the scientific method, the hypothesis is constructed before any applicable research has been done, apart from a basic background review.

What are the differences between hypothesis?

In scientific reasoning, a hypothesis is constructed before any applicable research has been done. A theory, on the other hand, is supported by evidence: it's a principle formed as an attempt to explain things that have already been substantiated by data.

How many hypothesis are there for the origin of the earth?

Theories for the earth origin has been classified into two categories i.e., early theories and modern theory which are as follows: Early theories: Early Theories explained how the earth was formed….Theories of the origin of the Earth.

Where do hypotheses come from?

The English word hypothesis comes from the ancient Greek word ὑπόθεσις hypothesis whose literal or etymological sense is "putting or placing under" and hence in extended use has many other meanings including "supposition".

Why are hypotheses framed?

Frame statements or hypotheses that reflect a prediction and are testable. The results of hypothesis testing directly help to answer the research questions and draw conclusions for the study.

When was the solar system formed?from study.com

It's believed that before our solar system was formed 4.5 billion years ago, a nebula, which is an interstellar cloud of gas and dust, was present in our location. As gravity does with everything, it began to condense the gas into varying regions of density. The denser regions began to grow into clumps of matter, which, over the course of time, ...

What happened during the early formation of our solar system?from study.com

It's believed that during the early formation of our solar system, a young Earth and an object about the size of Mars collided, sending debris into space and reforming within Earth's gravity and forming the moon. The image here shows how a planet may have formed in an early forming solar system.

How did the solar nebula form?from study.com

The Solar Nebular Hypothesis. The solar nebular hypothesis describes the formation of our solar system from a nebula cloud made from a collection of dust and gas. It is believed that the sun, planets, moons, and asteroids were formed around the same time around 4.5 billion years ago from a nebula. You must c C reate an account to continue watching.

What causes the orbital plane of the planets and moons?from study.com

The orbital plane of the planets and moons is a result from the nebula, which is an interstellar cloud of gas and dust, spinning and spreading out into a flat disk. Intense gravitational pull from the large amount of mass in the sun caused hydrogen to fuse into helium, creating the birth of our sun. Solar Nebular Hypothesis Key Terms.

What is the solar nebula hypothesis?from study.com

The solar nebula hypothesis explains how the solar system was created from a nebula cloud. Discover how this hypothesis theorizes about the the formation of the sun, the planets, and asteroids. Updated: 09/09/2021

What happens to the planets when gravity condenses the gas?from study.com

As gravity condensed the gas, rotation of the gas increased , spreading the gas cloud into a rotating disk that would form the plane of the solar system as we know it today. Evidence of this can be seen because all of the planets revolve around the sun in the same plane and direction.

What is the name of the interstellar cloud of gas and dust?from study.com

Nebula: an interstellar cloud of gas and dust. Planetesimals: early planets. Asteroids: planetesimals that were unable to form into larger planets. Learning Outcomes. After completion of this lesson, students have the knowledge necessary to: Define and discuss the Solar Nebular Hypothesis.

Properties of Our Solar System

Identifying A Theory

• The only theory to date that meets all of the requirements stated above is known as the solar nebula theory. This suggests that the solar system arrived at its current form after collapsing from a molecular gas cloud some 4.568 billion years ago. In essence, a large molecular gas cloud, several light-years in diameter, was disturbed by a nearby eve...

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Solar Nebula Theory and Other Systems