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]
They think that when the sun was being born, a nebula collapsed creating a few planets.
Its a beatiful world
With a sun, boy & a girl
Right outside
With a smile and no snide
Bring joy
A sun, girl & a boy
More than 4.6 billion years ago, the solar system was nothing more than a vast spinning cloud of gas, dust, rock, and ice. As this cloud spun, most of the matter came together in the center and formed a star-the sun. The leftover debris then lumped together and formed the nine planets.
Just after the Big Bang all the matter that was created was dust and gas. This dust and gas started to create some little groups. (The reason why they started to group up is as followed: when two atoms meet each other, one of them may wrest an electron, which is not necessary, out of the other one. Let's call this atom 'Atom A'. When the atom with a spare electron (Atom B) touches another one, which has a lack on electrons, spare electron 'jumps off' from Atom A to Atom B. Nonetheless, Atom A still attracts this electron. What happens is that these two atoms just share it and so attract each other. You can see the same situation when using a glue stick.) Then these groups start to grow, and when they reach the size, where the gravity is strong enough to attract some smaller groups, they make these groups orbit them and so create a friction on themselves. The friction creates energy and rises the temperature. Through time the smaller groups finally join the bigger ones. In a couple of billions of years, one of the big groups reaches the size of the Sun. When this happens, it creates such a huge gravitational pull that it even makes another big groups of dust and gas orbit it. But because these groups are far enough, they do not create a friction. They continuously orbit the biggest group of dust and gas. We are used to call these groups 'planets' - they are bigger than an asteroid, but smaller than a star.
But they were completely different that time. There were about twenty of them. Ones were bigger, other ones were smaller. But the ones that were bigger attracted the smaller planets, which then joined together. And so on till there were only 8 planets left.
I hope I have answered your question :)
They believe a large gas cloud in space was condensed into what we now call the sun. Chunks of this cloud flew into orbit around the sun and eventually condensed into planets.
By The Big Bang over 4.6 billion years ago.
Many scientists formed their own individual theory's as to how the solar system was formed, however, the most commonly known theory is "The big bang theory".
See the related question
Gravity.
they believe our solar system was formed by the big bang
Nebula
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.
The planets in the solar system are formed by fragment of the original cloud.
Gravity.
they believe our solar system was formed by the big bang
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!
Nebula
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.
Scientists theorize that a planet-sized object collided with earth to form the moon.
The planets in the solar system are formed by fragment of the original cloud.
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.
When science was gored