The most immediate origin of the Solar System, was as a cloud of dust, gases, and rocks, resulting from the explosion of a super nova. Probably in the Orion Arm of our Milky Way Galaxy.
These gradually accumulated in one region, and the Sun grabbed most of the Hydrogen and helium. The Sun is over 99.8% of the mass of the whole Solar System.
Eventually these materials clumped together by gravity.
The best date we have for the Solar System; the oldest dated rocks (actually zircons within the rocks); is about 4.5 x 109 years.
Gravitational pressure eventually heated the Sun's material enough that Fission process began and things looked up from that point.
Have a look at the Hertzsprung Russell Diagram, which indicates the position our Sun has in the Universe.
By the 'BIG BANG'! [NO]
Gravity.
Scientists hypothesize that the sun formed from a giant cloud of gas and dust in space, known as a solar nebula. As gravity caused the nebula to collapse, most of its material gathered at the center to form the sun, while the remaining material formed the planets, moons, and other objects in the solar system. This process is known as the nebular hypothesis.
No one knows it. Scientists lie or exaggerate about knowing. Although the above is partially true, scientists do have theories about how the solar system was formed. If the entire solar system was formed at the same time then all objects in the solar system are the same age. Using radioactive dating of meteorites scientists calculate how long it has been since the meteorite solidified and go based on that date.
Scientists believe that the solar system formed from a vast cloud of gas and dust, called the solar nebula, around 4.6 billion years ago. Gravity caused the nebula to collapse and form a spinning disk, with the Sun forming at the center and the planets forming from the material in the disk. This model, known as the nebular hypothesis, is supported by observations of other planetary systems and the composition of the solar system.
Nobody let them in. They formed with the solar system.
Scientists hypothesize that the sun formed from a massive cloud of gas and dust known as a solar nebula. This cloud collapsed under its own gravity, leading to the formation of the sun at the center of the solar system.
Gravity.
Scientists hypothesize that the sun formed from a giant cloud of gas and dust in space, known as a solar nebula. As gravity caused the nebula to collapse, most of its material gathered at the center to form the sun, while the remaining material formed the planets, moons, and other objects in the solar system. This process is known as the nebular hypothesis.
Some think it formed from a star which was produced by the Big Bang theory. Then astroids formed planets. That's the simple version.additional. The age of the Universe is about 14x109 years.The age of the Solar system is 4.5x109 years.The elements in the Earth greater than iron, need the energy of a super nova to manufacture them.So our Solar system is possibly the end product of a super nova.So you were once a part of a nova!
No one knows it. Scientists lie or exaggerate about knowing. Although the above is partially true, scientists do have theories about how the solar system was formed. If the entire solar system was formed at the same time then all objects in the solar system are the same age. Using radioactive dating of meteorites scientists calculate how long it has been since the meteorite solidified and go based on that date.
Scientists believe that the solar system formed about 4.5 billion years ago.
4.5-5 billion years old
When the Moon was formed, the Solar System WAS already a solar system.
The solar system is believed to have formed about 5 billion years ago, and by the way, why do you call it YOUR solar system? Do you come from a different solar system? Because if not, then it's OUR solar system.
Scientists believe that the solar system formed from a vast cloud of gas and dust, called the solar nebula, around 4.6 billion years ago. Gravity caused the nebula to collapse and form a spinning disk, with the Sun forming at the center and the planets forming from the material in the disk. This model, known as the nebular hypothesis, is supported by observations of other planetary systems and the composition of the solar system.
When science was gored
Nasa