Explain the formation of the solar system
The planets were originally thought to have formed in or near their current orbits. 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: several objects at least as massive as Mercury may have been present in the inner Solar System, the outer Solar System may have been mu. The solar system formed about 4.6 billion years ago from the gravitational collapse of a region within a large molecular cloud12. This cloud was made of interstellar dust and hydrogen gas and was several light-years across12. As the cloud contracted, a hot dense center formed, which became the proto-Sun1. The rest of the cloud formed a swirling disk around the proto-Sun, called the solar nebula, which eventually gave rise to the planets and other bodies1.
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6 FAQs about [Explain the formation of the solar system]
How did the Solar System form?
The Solar System[ d ] is the gravitationally bound system of the Sun and the objects that orbit it. [ 11 ] It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.
How has the Solar System evolved?
The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later to have been captured by their planets. Still others, such as Earth's Moon, may be the result of giant collisions.
When did the Solar System start?
There is evidence that the formation of the Solar System began about 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. [ 1 ]
How did the Sun and planets form?
The Sun and the planets and all of the other stuff in our solar system all formed from a really big cloud of gas and dust in space. We call such a cloud a “nebula” and more than one of them we refer to as “nebulae.” There are nebulae all around our galaxy, and it’s from these nebulae that stars and planets form.
How did the Sun form?
It formed about 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc. The Sun is a typical star that maintains a balanced equilibrium by the fusion of hydrogen into helium at its core, releasing this energy from its outer photosphere.
What is Planetary System formation?
(HS-ESS1-2) The phenomenon of planetary system formation serves as a context for the emergence and evolution of life. A cloud of gas and dust in space is called a “nebula”. The Nebular Theory is the scientific theory for how stars and planets form from molecular clouds and their own gravity.