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It has been suggested that comets originate in the Oort cloud and then travel in long elliptical orbits around the Sun.
I presume you are referring to the Oort cloud.
The planets in the solar system are formed by fragment of the original cloud.
The Oort Cloud is the answer.
Comets originate from two regions in the Solar System, the Kuiper Belt and the Oort cloud.
The Oort Cloud
Oort cloud
No it does not. The Oort cloud is not a planet. It is a sphere of comets around our solar system.
It has been suggested that comets originate in the Oort cloud and then travel in long elliptical orbits around the Sun.
The sun. Without the sun, there would have been no Solar system, just a bit of dust cloud floating around.
The Solar System formed from a cloud of gas, that collapsed.
The solar system was previously a cloud of interstellar gas.
I presume you are referring to the Oort cloud.
that is called the Oort cloud and that's where comets come from.
The Oort cloud. It's actually not specifically between the solar system and Proxima, it's more like the outer layer of the solar system.
Solar nebula.
The planets in the solar system are formed by fragment of the original cloud.